9 4 noun
n
noun
• (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants
Example sentence • A single bacterium can multiply into millions within a few hours.
10 5 noun
n
noun
• a legally authorized postponement before some obligation must be discharged
Example sentence • The government announced a moratorium on gas exploration in environmentally sensitive areas.
9 4 noun
n
noun
• a brittle silver-white metalloid element that is related to selenium and sulfur; it is used in alloys and as a semiconductor; occurs mainly as tellurides in ores of copper and nickel and silver and gold
Example sentence • The melting point of tellurium is approximately 449.5 degrees Celsius.
8 4 noun
n
noun
• a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite
Example sentence • Many aircraft and spacecraft use titanium for its durability.
6 3 noun
n
noun
• any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)
Example sentence • The hotel lobby featured a beautiful atrium .
6 3 noun
n
noun
• a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal
Example sentence • The atomic symbol for cesium is Cs.
9 3 noun
n
noun
• a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite
Example sentence • Consuming excessive amounts of strontium can lead to health complications.
8 4 noun
n
noun
• any of numerous plants of the family Geraniaceae
Example sentence • I planted a beautiful geranium in my garden.
10 4 noun
n
noun
• a radioactive transuranic element synthesized from californium
Example sentence • The atomic number of lawrencium is 103.
8 4 noun
n
noun
• a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor
Example sentence • Marie Curie discovered polonium in 1898.
8 4 noun
n
noun
• a tank or pool or bowl filled with water for keeping live fish and underwater animals
Example sentence • The aquarium was filled with colorful tropical fish.
10 5 noun
n
noun
• the area of a theater or concert hall where the audience sits
Example sentence • The school held its annual concert in the auditorium .
11 5 noun
n
noun
• a mortuary where corpses are cremated
Example sentence • The crematorium is a facility where the bodies of the deceased are cremated.
8 4 noun
n
noun
• state of violent mental agitation
Example sentence • She was overwhelmed with delirium after winning the championship.
8 4 noun
n
noun
• a large retail store organized into departments offering a variety of merchandise; commonly part of a retail chain
Example sentence • I love shopping at the emporium . They have a wide variety of products.
11 5 noun
n
noun
• a stable situation in which forces cancel one another
Example sentence • The company is trying to maintain an equilibrium between production and demand.
11 5 noun
n
noun
• a building housing an instrument for projecting the positions of the planets onto a domed ceiling
Example sentence • I visited the planetarium last night and learned about the solar system.
10 4 noun
n
Example sentence • The construction of the Great Wall of China took over a millennium to complete.
6 3 noun
n
noun
• a soft silvery metallic element of the alkali earth group; found in barite
Example sentence • The doctor ordered a barium swallow test to examine the patient's esophagus.
7 4 noun, adjective
n, adj
noun
• a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
Example sentence • The niobium wire has excellent mechanical properties.
10 4 noun
n
noun
• state of disgrace resulting from public abuse
Example sentence • He endured public opprobrium after being caught cheating on his wife.
10 5 noun
n
noun
• a hospital for recuperation or for the treatment of chronic diseases
Example sentence • She spent several months in a sanatorium recovering from tuberculosis.
7 3 noun
n
noun
• a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
Example sentence • The abundance of thorium in the Earth's crust is about four times that of uranium.
10 4 noun
n
noun
• A tubular excretory organ in some invertebrates
Example sentence • The nephridium is a tubular excretory organ found in many invertebrates.
9 4 noun
n
noun
• an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
Example sentence • Scientists use deuterium in nuclear reactors to study fusion reactions.
10 5 noun
n
noun
• a fee paid for a nominally free service
Example sentence • She received an honorarium for giving a speech at the conference.
7 3 noun, adjective
n, adj
noun
• a song or hymn of mourning composed or performed as a memorial to a dead person
Example sentence • Mozart composed a requiem for his own funeral.
6 3 noun
n
noun
• large genus of perennial and biennial pungent bulbous plants: garlic; leek; onion; chive; sometimes placed in family Alliaceae as the type genus
Example sentence • The allium has a pungent aroma that is released when it is cut or crushed.
6 3 noun, adjective
n, adj
noun
• a trivalent metallic element of the rare earth group; occurs with yttrium
Example sentence • The erbium ion emits a pink light when excited.
8 3 noun
n
noun
• a radioactive element of the alkali-metal group discovered as a disintegration product of actinium
Example sentence • The discovery of francium 's existence was a significant scientific achievement.
6 3 noun, adjective
n, adj
noun
• a means or instrumentality for storing or communicating information
adjective satellite
• around the middle of a scale of evaluation
Example sentence • I prefer to paint with oil as my medium .
7 3 noun
n
noun
• a large structure for open-air sports or entertainments
Example sentence • The stadium was filled with cheering fans.
7 3 verb, noun
v, n
noun
• a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite
Example sentence • The terbium atom has a radius of approximately 181 pm.
11 5 noun
n
noun
• a radioactive transuranic element; discovered by bombarding curium with alpha particles
Example sentence • Scientists at the Lawrence Berkeley National Laboratory in California were involved in the discovery of californium .
11 4 noun
n
noun
• spindle-shaped bacterial cell especially one swollen at the center by an endospore
11 4 noun
n
noun
• a radioactive transuranic element produced by bombarding plutonium with neutrons
Example sentence • The use of einsteinium in practical applications is limited due to its rarity and radioactivity.
8 4 noun
n
noun
• the domain ruled by an emperor or empress; the region over which imperial dominion is exercised
Example sentence • The emperor held absolute imperium over the Roman Empire.
11 5 noun, adjective
n, adj
noun
• a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles (Md is the current symbol for mendelevium but Mv was formerly the symbol)
Example sentence • The element mendelevium is named after the Russian chemist Dmitri Mendeleev.
12 6 noun
n
noun
• a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
Example sentence • The main application of praseodymium is in magnets.
8 4 noun
n
noun
• a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite
Example sentence • The rubidium atom has 37 electrons and 37 protons.
9 4 noun
n
noun
• a vivarium in which selected living plants are kept and observed
Example sentence • I have a small terrarium with succulents on my desk.
11 5 noun
n
noun
• The membrane (or periosteum) which covers the outer surface of the skull.
6 3 noun
n
noun
• fruiting body of some rust fungi bearing chains of aeciospores
Example sentence • The aecium is a reproductive structure in certain rust fungi.
7 3 noun
n
noun
• a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal
Example sentence • The atomic number of caesium is 55.
7 3 noun
n
noun
• a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
Example sentence • Milk and dairy products are excellent sources of calcium .
8 3 noun
n
noun
• a hard brittle multivalent metallic element; resistant to corrosion and tarnishing
10 4 noun
n
noun
• an academic meeting or seminar usually led by a different lecturer and on a different topic at each meeting
Example sentence • I attended a fascinating colloquium on quantum physics.
7 3 noun
n
noun
• a transuranic element with atomic number 105
Example sentence • The discovery of dubnium was confirmed in 1970.
7 3
noun
• a transuranic element with atomic number 105
Example sentence • The element hahnium was named after the German physicist Otto Hahn.
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