21-Letter Words Containing: I,R,A
(In Any Order)
There are 41 21 letter words,
971 21 letter phrases and
0 21 letter abbr's with
I,R,A in.
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| Word | Save | Length | Usage | Points | Type | ||
|---|---|---|---|---|---|---|---|
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All 21 Letter Words
Words (41)
- undemonstrativenesses
- tetrahydrocannabinols
- straightforwardnesses
- stereomicroscopically
- psychotherapeutically
- psychopharmacologists
- pseudocholinesterases
- photophosphorylations
- photolithographically
- overintellectualizing
- overcommercialization
- otorhinolaryngologies
- neuroendocrinological
- microminiaturizations
- intersubstitutability
- internationalizations
- interchangeablenesses
- hypercholesterolemias
- extraterritorialities
- electroretinographies
- electromyographically
- electrocardiographies
- disestablishmentarian
- dendrochronologically
- counterinterpretation
- counterdemonstrations
- compartmentalizations
- antiferromagnetically
- antiauthoritarianisms
- anthropomorphizations
- adrenocorticotrophins
- adrenocorticosteroids
- acetylcholinesterases
- psychopharmacological
- pseudohermaphroditism
- polyvinyl-formaldehyde
- otorhinolaryngologist
- mucopolysaccharidosis
- establishmentarianism
- constructive-metabolic
- arenaria-melanocephala
Phrases (971)
- zonotrichia albicollis
- yellow-eyed grass family
- william schwenk gilbert
- william lawrence shirer
- william ewart gladstone
- william carlos williams
- white-coat hypertension
- vladimir ilyich ulyanov
- use of goods and services
- us trade representative
- uruguayan monetary unit
- urinary tract infection
- tumultuous disturbance
- transmission mechanism
- tibet autonomous region
- theatrical performance
- telephone conversation
- tanzanian monetary unit
- syngnathus hildebrandi
- svante august arrhenius
- surveillance of disease
- surgical contraception
- superfamily tyrannidae
- superclass chelicerata
- stream of consciousness
- strawberry haemangioma
- strategic intelligence
- sri lankan monetary unit
- spontaneous generation
- spectroscopic analysis
- speaker identification
- soren aabye kierkegaard
- solidago missouriensis
- slovenian monetary unit
- sir john everett millais
- sir james matthew barrie
- sir edward william elgar
- sir alexander mackenzie
- sierra nevada mountains
- sierra madre occidental
- second sino-japanese war
- sanguinaria canadensis
- samuel taylor coleridge
- sacramental manduction
- rosmarinus officinalis
- ringgold wilmer lardner
- right atrium of the heart
- richard the lion-hearted
- pterocarpus santalinus
- protector of boundaries
- prosopium williamsonii
- prosopium cylindraceum
- procaine hydrochloride
- post-mortem examination
- political contribution
- physiological property
- philosophical doctrine
- philadelphia pepper pot
- phascolarctos cinereus
- pharmaceutical chemist
- peter alexander ustinov
- percy aldridge grainger
- party to the transaction
- particular proposition
- pakistani monetary unit
- ovo-lacto vegetarianism
- order lyginopteridales
- order caprimulgiformes
- norwegian monetary unit
- nondirectional antenna
- nikolai rimsky-korsakov
- musculus intercostalis
- multiplicative inverse
- mongolian monetary unit
- metallurgical engineer
- megaptera novaeangliae
- mauritian monetary unit
- maternal-infant bonding
- manufacturing business
- male reproductive gland
- malaysian monetary unit
- lope felix de vega carpio
- liquefied petroleum gas
- konrad zacharias lorenz
- knight of the round table
- klebs-loeffler bacillus
- ketorolac tromethamine
- jupiter optimus maximus
- jordanian monetary unit
- john greenleaf whittier
- john fitzgerald kennedy
- james william fulbright
- jack roosevelt robinson
- isle royal national park
- intravenous anesthetic
- intestinal obstruction
- interrogative sentence
- interlingual rendition
- industrial watercourse
- immune suppressant drug
- igor ivanovich sikorsky
- icelandic monetary unit
- hungarian monetary unit
- herpes varicella zoster
- henry hobson richardson
- helichrysum bracteatum
- helianthemum scoparium
- hans holbein the younger
- haitian creole language
- gravitational collapse
- gorilla gorilla gorilla
- ginglymostoma cirratum
- geometrical regularity
- gasterosteus pungitius
- fritillaria imperialis
- fratercula corniculata
- franz joseph i of austria
- francisella tularensis
- first-order correlation
- financial organization
- field-effect transistor
- federal security bureau
- family rhinotermitidae
- family peronosporaceae
- family myrmecophagidae
- family grossulariaceae
- extrauterine pregnancy
- experimental condition
- eupatorium perfoliatum
- eucalyptus fraxinoides
- ethiopian monetary unit
- erik alfred leslie satie
- empire state of the south
- elimination tournament
- electrical disturbance
- electrical distributor
- edward benjamin britten
- dominican monetary unit
- disturbance of the peace
- dissolution of marriage
- disseminated sclerosis
- diametrical opposition
- destructive metabolism
- desoxyribonucleic acid
- decomposition reaction
- dano-norwegian language
- cucurbita argyrosperma
- create from raw material
- corroborating evidence
- continuity army council
- congressional district
- congenital abnormality
- colombian monetary unit
- clinton administration
- chromosomal aberration
- chionanthus virginicus
- chemotrophic autotroph
- charles frederick worth
- charles francois gounod
- cercopithecus aethiops
- central processing unit
- carbon dioxide acidosis
- capital of western samoa
- capital of west virginia
- capital of turkmenistan
- capital of new hampshire
- cape verde monetary unit
- campanula rotundifolia
- campanula persicifolia
- cambodian monetary unit
- byzantine architecture
- bureaucratic procedure
- bulgarian monetary unit
- brazilian monetary unit
- bhutanese monetary unit
- battle of soissons-reims
- battle of little bighorn
- battle of lake trasimene
- battle of granicus river
- battle of bosworth field
- barthold george niebuhr
- bank-depositor relation
- ballistic galvanometer
- automatic transmission
- asclepias verticillata
- articulatio trochoidea
- articulatio synovialis
- articulatio spheroidea
- arteria infraorbitalis
- armed forces censorship
- arithmetic progression
- argentine monetary unit
- arctostaphylos uva-ursi
- architectural ornament
- aram ilich khachaturian
- antidorcas marsupialis
- anthriscus cereifolium
- antediluvian patriarch
- anaphalis margaritacea
- anacardium occidentale
- alexander melville bell
- aleksandr solzhenitsyn
- ailuropoda melanoleuca
- agricultural chemistry
- agkistrodon contortrix
- administrative hearing
- adenosine triphosphate
- acrocentric chromosome
- accord and satisfaction
- accommodation endorser
- acanthocybium solandri
- academic administrator
- zonotrichia leucophrys
- zanthoxylum americanum
- zannichellia palustris
- zalophus californianus
- yellow-breasted bunting
- yellow-bellied terrapin
- world tamil association
- woolly bear caterpillar
- winter crookneck squash
- william randolph hearst
- william pitt the younger
- william hubbs rehnquist
- william henry fox talbot
- william henry beveridge
- william franklin graham
- william crawford gorgas
- wilhelm konrad roentgen
- white-tailed jackrabbit
- white-breasted nuthatch
- western lowland gorilla
- werdnig-hoffman disease
- weapons-grade plutonium
- warren gamaliel harding
- war of the grand alliance
- wallis warfield windsor
- wallis warfield simpson
- voyageurs national park
- von willebrand's disease
- vladimir kosma zworykin
- visceral leishmaniasis
- viral hemorrhagic fever
- violet-flowered petunia
- videocassette recorder
- victorian architecture
- viccinium membranaceum
- veterans of foreign wars
- veronica serpyllifolia
- verbesina alternifolia
- venae cerebrum inferior
- venae centrales hepatis
- vena retromandibularis
- van allen radiation belt
- ursus arctos horribilis
- urea-formaldehyde resin
- upper respiratory tract
- university of cambridge
- united states president
- united states of america
- under the circumstances
- type i allergic reaction
- turpentine camphor weed
- turkistan islamic party
- trip the light fantastic
- trichostema dichotomum
- trichophaga tapetzella
- trichomanes boschianum
- tricholoma pessundatum
- tricholoma flavovirens
- transportation company
- transferred possession
- transactional immunity
- tragopogon porrifolius
- toxicodendron radicans
- three-dimensional radar
- thoracoepigastric vein
- thoracic actinomycosis
- third battle of the aisne
- thin-leaved stringybark
- thiamine pyrophosphate
- thermopsis macrophylla
- thermonuclear reaction
- tetraclinis articulata
- terrorist organization
- terrietia trifoliolata
- tennessee walking horse
- television transmitter
- take time by the forelock
- swaziland monetary unit
- sutura intermaxillaris
- superior pulmonary vein
- superfinishing machine
- superfamily sphecoidea
- superfamily hominoidea
- superfamily aphidoidea
- suborder scorpaenoidea
- suborder ornithomimida
- suborder euronithopoda
- subfamily uvulariaceae
- subfamily dracaenaceae
- subdivision pteropsida
- subclass cnidosporidia
- structural linguistics
- stropharia hornemannii
- streptosolen jamesonii
- strekelia formosissima
- strawberry-shrub family
- straight life insurance
- stipendiary magistrate
- stephanotis floribunda
- statistical regression
- standard and poor's index
- squamous cell carcinoma
- spielmeyer-vogt disease
- spherical trigonometry
- sphacelotheca reiliana
- south-central dravidian
- south american staghorn
- south american bullfrog
- solid propellant rocket
- solanum nigrum guineese
- software documentation
- social democratic party
- slovakian monetary unit
- skeleton in the cupboard
- sir rabindranath tagore
- sir james paul mccartney
- sir howard walter florey
- sir henry morton stanley
- sir george paget thomson
- simultaneous operation
- siderochrestic anaemia
- sickleweed golden aster
- shutter telegraph chain
- shrink-wrapped software
- sewing-machine operator
- serengeti national park
- semipermeable membrane
- selenarctos thibetanus
- selaginella eremophila
- secondary hypertension
- scorpaena grandicornis
- scolytus multistriatus
- scleropages leichardti
- scientific agriculture
- schlumbergera buckleyi
- schistosome dermatitis
- saxifraga occidentalis
- sansevieria guineensis
- samuel pierpont langley
- salpichroa organifolia
- salmonella typhimurium
- salmonella enteritidis
- saint christopher-nevis
- saint andrew the apostle
- russian orthodox church
- rudolf ludwig mossbauer
- round-leaved rein orchid
- rocky mountain bee plant
- robert maynard hutchins
- robert andrews millikan
- richmondena cardinalis
- richard von krafft-ebing
- richard adolf zsigmondy
- rhynchoelaps australis
- rhyacotriton olympicus
- rheumatoid spondylitis
- rheumatic heart disease
- revolutionary calendar
- reverse polish notation
- retirement savings plan
- resistance thermometer
- republic of south africa
- republic of sierra leone
- relative molecular mass
- rehabilitation program
- reginald carey harrison
- rectilinear regression
- reconnaissance vehicle
- reconnaissance mission
- reconnaissance in force
- received pronunciation
- reactive schizophrenia
- ratbite fever bacterium
- rapid eye movement sleep
- ranunculus glaberrimus
- radiotherapy equipment
- radioactive iodine test
- quantum chromodynamics
- pyxidanthera barbulata
- pyotr ilych tchaikovsky
- punctuated equilibrium
- pulmonary tuberculosis
- public relations person
- pterocarpus angolensis
- psychosomatic disorder
- psychological disorder
- psychoanalytic process
- pseudowintera colorata
- prumnopitys ferruginea
- protoplasmic astrocyte
- protestant reformation
- propositional calculus
- professional wrestling
- principle of relativity
- principality of andorra
- principal investigator
- princess grace of monaco
- prince otto von bismarck
- primitive idealization
- primary colour for light
- presidential directive
- prenanthes serpentaria
- preliminary prospectus
- power-assisted steering
- potassium permanganate
- potassium ferrocyanide
- potamogeton gramineous
- potamogeton americanus
- posttraumatic epilepsy
- postmortem examination
- posterior cardinal vein
- pomoxis nigromaculatus
- polypodium glycyrrhiza
- political correctitude
- polemonium van-bruntiae
- podicipitiform seabird
- pleasure-pain principle
- platycladus orientalis
- platycerium bifurcatum
- pipistrellus subflavus
- pinctada margaritifera
- piezoelectric material
- piedmont type of glacier
- phytophthora infestans
- physostegia virginiana
- physiological reaction
- photographic equipment
- photochemical reaction
- phoradendron serotinum
- phonetic transcription
- pholiota squarrosoides
- phase iii clinical trial
- pharmaceutical company
- peter ilich tchaikovsky
- personality assessment
- peromyscus maniculatus
- performance capability
- people's republican army
- people's liberation army
- pellaea andromedifolia
- pelargonium graveolens
- pedilanthus bracteatus
- peacekeeping operation
- path of least resistance
- parliamentary monarchy
- paranoid schizophrenia
- paracheirodon axelrodi
- pachysandra terminalis
- ornithischian dinosaur
- oriental black mushroom
- oreopteris limbosperma
- ordinary life insurance
- order conodontophorida
- oral poliovirus vaccine
- oral contraceptive pill
- operating instructions
- onoclea struthiopteris
- onobrychis viciaefolia
- onion yellow-dwarf virus
- old world leishmaniasis
- old high german language
- odocoileus virginianus
- octal numeration system
- occipitomastoid suture
- occipital protuberance
- nycticebus tardigradua
- nuclear fusion reaction
- north germanic language
- normal tension glaucoma
- nonverbal intelligence
- nonprofit organization
- nondiscretionary trust
- nitrohydrochloric acid
- nierembergia rivularis
- nickel-iron accumulator
- new world leishmaniasis
- neuromuscular junction
- nerve block anaesthesia
- neonatal mortality rate
- neo-gothic architecture
- negaprion brevirostris
- natural family planning
- national trading policy
- musculus biceps brachii
- muhlenbergia schreberi
- moving-coil loudspeaker
- moehringia lateriflora
- mithridates vi of pontus
- mirabilis oblongifolia
- middle meningeal artery
- microwave spectroscopy
- micromeria chamissonis
- microfinishing machine
- meuse-argonne operation
- meuse-argonne offensive
- meteorological balloon
- metacentric chromosome
- mesa verde national park
- menticirrhus undulatus
- menticirrhus saxatilis
- melanotis caerulescens
- mediterranean fruit fly
- medieval greek language
- mechanical engineering
- maximilien robespierre
- maturity-onset diabetes
- matthew calbraith perry
- mathematics department
- mathematical operation
- master in public affairs
- mass-energy equivalence
- marriage of convenience
- markaz-ud-dawa-wal-irshad
- marie-strumpell disease
- margaret hilda thatcher
- margaret higgins sanger
- mantled ground squirrel
- mandrillus leucophaeus
- mandragora officinarum
- malignant hyperthermia
- malignant hypertension
- malaysia militant group
- malabsorption syndrome
- magnetic storage medium
- magnetic field strength
- macowanites americanus
- macadamia integrifolia
- lysimachia quadrifolia
- lower respiratory tract
- lorenzo the magnificent
- loiseleuria procumbens
- localization principle
- localisation principle
- liver-spotted dalmatian
- lithospermum canescens
- literal interpretation
- listeria monocytogenes
- linguistics department
- linguistic performance
- line of least resistance
- lime disease spirochete
- lieutenant junior grade
- lethargic encephalitis
- le chatelier's principle
- law of partial pressures
- lateral geniculate body
- large-flowered calamint
- large indefinite amount
- lanthanotus borneensis
- landscape architecture
- lake clark national park
- lagerstroemia speciosa
- lagarostrobus colensoi
- lacto-ovo vegetarianism
- kurdistan workers' party
- kurdistan workers party
- knight of the square flag
- king arthur's round table
- ketamine hydrochloride
- keratosis follicularis
- kathryn elizabeth smith
- karl gustav jacob jacobi
- karl augustus menninger
- juniperus horizontalis
- joseph alois schumpeter
- john roderigo dos passos
- johann gottfried herder
- johan august strindberg
- jean baptiste de lamarck
- jarvik artificial heart
- ivor armstrong richards
- islamic republic of iran
- iron manganese tungsten
- iron deficiency anaemia
- iraqi national congress
- interstitial pneumonia
- interpretative dancing
- international date line
- internal carotid artery
- interactive multimedia
- intelligence operation
- insulin shock treatment
- initial public offering
- information technology
- information processing
- inferior pulmonary vein
- industrial loan company
- industrial engineering
- indian rebellion of 1857
- imperative programming
- immunological disorder
- immediate apprehension
- imaginative comparison
- icterus galbula galbula
- hypericum gentianoides
- hyperemesis gravidarum
- hygrophorus kauffmanii
- hydraulic transmission
- hydrated aluminum oxide
- hydnocarpus laurifolia
- hybrid tuberous begonia
- hundred-and-twenty-fifth
- hundred-and-thirty-fifth
- humoral immune response
- horseradish peroxidase
- horizontal integration
- horizontal combination
- horace wilkinson bridge
- historical linguistics
- higher national diploma
- hierarchical structure
- hermannia verticillata
- heritiera trifoliolata
- herbert alexander simon
- hemorrhagic septicemia
- helianthus laetiflorus
- height of capillary rise
- harry fitch kleinfelter
- harley granville-barker
- harkat-ul-jihad al-islami
- harakat ul-jihad-i-islami
- hans christian andersen
- hand-held microcomputer
- haleakala national park
- hairy-legged vampire bat
- habenaria unalascensis
- gyromitra sphaerospora
- gustavus franklin swift
- gustav robert kirchhoff
- guillain-barre syndrome
- greta louisa gustafsson
- greatest common divisor
- greater rhomboid muscle
- greater prairie chicken
- great plains paintbrush
- great australian desert
- gravitational constant
- gospel according to mark
- gospel according to luke
- gospel according to john
- glutathione peroxidase
- giraffa camelopardalis
- giovanni angelo braschi
- gideon algernon mantell
- gibraltar monetary unit
- geranium viscosissimum
- george i of great britain
- george frederick handel
- genus plicatoperipatus
- genus macrothelypteris
- genus australopithecus
- gentianopsis thermalis
- gaylussacia brachycera
- gay liberation movement
- gastrointestinal tract
- gamma aminobutyric acid
- gaius valerius catullus
- gaius cornelius tacitus
- front-porch campaigning
- fritillaria pluriflora
- fritillaria parviflora
- fritillaria lanceolata
- friedrich august kekule
- french ultramarine blue
- frederick childe hassam
- fraxinus quadrangulata
- fraxinus pennsylvanica
- frank morrison spillane
- francis turner palgrave
- forestiera neomexicana
- forest tent caterpillar
- fluorescein isocyanate
- florists' chrysanthemum
- florist's chrysanthemum
- fingerprint specialist
- financial organisation
- filter-tipped cigarette
- ficus carica sylvestris
- fertilization membrane
- ferroelectric material
- family treponemataceae
- family theophrastaceae
- family steatornithidae
- family spirochaetaceae
- family sphaerobolaceae
- family scomberesocidae
- family sclerotiniaceae
- family sarcoscyphaceae
- family rhizopogonaceae
- family pterodactylidae
- family petromyzontidae
- family orycteropodidae
- family mastotermitidae
- family lardizabalaceae
- family ichthyosauridae
- family hydrophyllaceae
- family gomphotheriidae
- family gasterophilidae
- family erythroxylaceae
- family electrophoridae
- family dryopteridaceae
- family dromaeosauridae
- family dactylopteridae
- family dacrymycetaceae
- family cyprinodontidae
- family convallariaceae
- family chrysochloridae
- family cercopithecidae
- family ceratopogonidae
- family caryophyllaceae
- family callitrichaceae
- family balaenopteridae
- family auriculariaceae
- family armadillidiidae
- family anthocerotaceae
- fall-blooming hydrangea
- fahrenheit thermometer
- extrauterine gestation
- extraterrestrial being
- external oblique muscle
- external carotid artery
- external auditory canal
- exponential expression
- experimental procedure
- existential quantifier
- exfiltration operation
- evening-primrose family
- evangelista torricelli
- european woolly thistle
- european ladies' tresses
- euproctis chrysorrhoea
- euphorbia heterophylla
- euphorbia caput-medusae
- euphorbia amygdaloides
- eupatorium coelestinum
- eugenia caryophyllatum
- ethylene tetrachloride
- essential hypertension
- erythronium americanum
- eretmochelys imbricata
- epimedium grandiflorum
- entertainment industry
- electron spin resonance
- electrolytic capacitor
- electrochemical series
- electrical line of force
- electrical engineering
- electric-discharge lamp
- edward vincent sullivan
- edward james muggeridge
- ecuadoran monetary unit
- ectopistes migratorius
- economic strangulation
- ebola hemorrhagic fever
- eastern lowland gorilla
- dwight david eisenhower
- dumetella carolinensis
- dracunculus medinensis
- douglas elton fairbanks
- doctor-patient relation
- division spermatophyta
- distribution agreement
- disinfestation officer
- dishonorable discharge
- directional microphone
- dioscorea elephantipes
- digital subscriber line
- digital plethysmograph
- differential threshold
- differential diagnosis
- diethylbarbituric acid
- diervilla sessilifolia
- diaphragmatic pleurisy
- diachronic linguistics
- developmental learning
- detachment of the retina
- dermacentor variabilis
- depreciation allowance
- department of sociology
- department of education
- department of economics
- department of chemistry
- deparia acrostichoides
- degenerative arthritis
- deepwater squirrelfish
- dark field illumination
- daniel patrick moynihan
- daniel garrison brinton
- cyclonic vacuum cleaner
- cyclic redundancy check
- curvilinear regression
- cucurbita pepo melopepo
- cucurbita foetidissima
- crotalaria spectabilis
- creeping windmill grass
- cost structure analysis
- corydalis sempervirens
- cortinarius corrugatus
- cortinarius armillatus
- corticium salmonicolor
- correlational analysis
- coronary insufficiency
- coronary-artery disease
- coregonus clupeaformis
- coprinus atramentarius
- conversational partner
- contingent probability
- constant of gravitation
- congratulations letter
- congenital heart defect
- conformational entropy
- configurational isomer
- conductive hearing loss
- concentration gradient
- complementary medicine
- comparative psychology
- comparative negligence
- comparative literature
- compact disc recordable
- commiphora meccanensis
- collinsia heterophylla
- collectivist anarchism
- colaptes caper collaris
- cochlearia officinalis
- clustered lady's slipper
- client-centered therapy
- clematis verticillaris
- classical architecture
- class chytridiomycetes
- citharichthys cornutus
- circumflex iliac artery
- circumflex femoral vein
- circuit court of appeals
- cicily isabel fairfield
- chronological sequence
- chronic wasting disease
- chief operating officer
- chief financial officer
- cheilanthes gracillima
- charlotte de rothschild
- charles edward ringling
- characterisic function
- chance-half correlation
- chamaecyparis thyoides
- cercopithecus talapoin
- centrosema virginianum
- central american nation
- centigrade thermometer
- centaurea solstitialis
- catholic reaction force
- categorical imperative
- casuarina equisetfolia
- carya myristicaeformis
- carl xvi gustaf of sweden
- carl gustav jacob jacobi
- cardiovascular disease
- cardiopulmonary arrest
- cardamine rotundifolia
- carcinomatous myopathy
- carcharodon carcharias
- carcharinus longimanus
- capsicum annuum grossum
- capsella bursa-pastoris
- callitris quadrivalvis
- callitris glaucophylla
- california yellow bells
- california black walnut
- calcium-channel blocker
- calamintha grandiflora
- brittle maidenhair fern
- british imperial system
- brassica rapa chinensis
- branchiopod crustacean
- brachychiton rupestris
- brachychiton populneus
- brachychiton australis
- bottom fermenting yeast
- botrychium virginianum
- bittersweet nightshade
- biquadratic polynomial
- biogeographical region
- beta-adrenergic blocker
- bermuda maidenhair fern
- beaumontia grandiflora
- beating-reed instrument
- basic cognitive process
- babe didrikson zaharias
- automotive engineering
- austrocedrus chilensis
- austro-asiatic language
- australian honeysuckle
- aureolaria pedicularia
- august ferdinand mobius
- auditory hyperesthesia
- auditory hallucination
- auditory communication
- attack aircraft carrier
- atrioventricular valve
- atrioventricular trunk
- atrioventricular block
- atmospheric phenomenon
- asynchronous operation
- astronomical telescope
- assertiveness training
- asplenium rhizophyllum
- aspidiotus perniciosus
- asparagus asparagoides
- asiatic flying squirrel
- asian longhorned beetle
- asclepias purpurascens
- ascii control character
- artificial respiration
- arthur seymour sullivan
- arteria gastrica breves
- arteria bulbi vestibuli
- arteria appendicularis
- arnold-chiari deformity
- armoured combat vehicle
- arenaria serpyllifolia
- area of cardiac dullness
- araucaria heterophylla
- araucaria cunninghamii
- applications programme
- apparatus urogenitalis
- anton gregor rubinstein
- antoine henri becquerel
- antihemorrhagic factor
- antihaemophilic factor
- anterior vertebral vein
- anisotremus virginicus
- anglo-german concertina
- angiogenesis inhibitor
- amphoteric electrolyte
- amphicarpaea bracteata
- amorphophallus titanum
- amorphophallus rivieri
- american virgin islands
- american sweet chestnut
- american stock exchange
- american smooth dogfish
- american leishmaniasis
- american cranberry bush
- alstroemeria pelegrina
- allium sphaerocephalum
- algeripithecus minutus
- alfred joseph hitchcock
- alexander the liberator
- albert von szent-gyorgyi
- al-aqsa martyrs' brigades
- al-aksa martyrs brigades
- agriculture department
- agkistrodon piscivorus
- aeschynanthus radicans
- advertising department
- active electrolocation
- account representative
- accessory cephalic vein
- abstract expressionism
- absorption coefficient
