8 3 noun, adjective n, adj noun
• any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
Example sentence • The halogens are a group of nonmetallic elements on the periodic table.
12 4 noun n noun
• any of a group of steroid hormones that have the effect of progesterone
Example sentence • Some women may experience side effects from taking progestogens .
7 2 noun n noun
• an immunoglobulin E that is formed as an antibody against allergens (such as pollen); attaches to cell membranes causing the release of histamine and other substances responsible for the local inflammation characteristic of an allergy
Example sentence • John reagins control of the situation.
7 2 noun n noun
• a word used in exclamations of confusion
Example sentence • What the dickens are you doing?
7 2 adverb, noun adv, n noun
• tall iced drink of liquor (usually gin) with fruit juice
9 2 noun n noun
• a land mass that projects well above its surroundings; higher than a hill
Example sentence • She enjoys hiking in the mountains during her summer vacations.
6 2 noun n noun
• a large number or amount
Example sentence • There were dozens of people waiting in line for the concert tickets.
7 2 noun n noun
• the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
Example sentence • The stars in the heavens twinkled in the dark night sky.
4 1 noun n noun
• a transparent optical device used to converge or diverge transmitted light and to form images
Example sentence • She wiped the lens of her camera before taking a picture.
3 1 noun
• a former agency in the Department of Justice that enforces laws and regulations for the admission of foreign-born persons to the United States
7 2 noun n noun
• United States choreographer who brought human emotion to classical ballet and spirited reality to Broadway musicals (1918-1998)
8 3 verb v verb
• form a mental image of something that is not present or that is not the case
Example sentence • She imagines herself living in a different country.
4 1 noun n
No meanings yet for this word...
6 2 noun n noun
• a card game in which you play your sevens and other cards in sequence in the same suit as the sevens; you win if you are the first to use all your cards
Example sentence • He rolled two sevens in a row.
4 1 noun n noun
• the habitation of wild animals
Example sentence • Many animals hibernate in dens during winter.
8 3 noun n noun
• a small motor nerve supplying the lateral rectus muscle of the eye
Example sentence • The abducens nerve innervates the lateral rectus muscle of the eye.
8 3 noun n noun
• any flowerless plant such as a fern (pteridophyte) or moss (bryophyte) in which growth occurs only at the tip of the main stem
Example sentence • Some examples of acrogens include ferns and horsetails.
10 3 noun n
No meanings yet for this word...
Example sentence • The chalcogens include oxygen, sulfur, selenium, tellurium, and polonium.
10 3 noun n noun
• a compound that can be converted to a pigment
Example sentence • The enzyme-linked immunosorbent assay (ELISA) involves the use of chromogens to detect the presence of antibodies.
8 2 noun n noun
• a liquid that boils at below -160 C and is used as a refrigerant
Example sentence • The cryogens used in rocket propulsion systems need to be stored and handled with extreme care.
8 3 noun n noun
• a monocotyledonous flowering plant; the stem grows by deposits on its inside
Example sentence • Plants often rely on endogens to regulate growth and development.
9 3 noun n noun
• a general term for female steroid sex hormones that are secreted by the ovary and responsible for typical female sexual characteristics
Example sentence • Some birth control pills contain synthetic estrogens .
7 3 noun n noun
• flowering plant with two cotyledons; the stem grows by deposit on its outside
Example sentence • Some exogens have medicinal properties.
9 3 noun n noun
• one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body
Example sentence • The liver stores glycogens to maintain blood glucose levels during fasting.
10 3 noun n noun
• any substance (such as thiouracil) that induces the formation of a goiter
Example sentence • Certain foods contain goitrogens and may affect thyroid health.
9 3 noun, adjective n, adj
No meanings yet for this word...
Example sentence • The histogens in the plant stem cells contribute to the growth and development of new tissues.
9 3 noun, adjective n, adj noun
• a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
Example sentence • Water is composed of two hydrogens and one oxygen.
8 3 noun n
No meanings yet for this word...
Example sentence • The thermal breakdown of kerogens produces usable hydrocarbons.
8 3 noun n
No meanings yet for this word...
Example sentence • The lysogens of bacteriophages are able to undergo both lytic and lysogenic life cycles.
8 3 noun n noun
• an agent that triggers mitosis
Example sentence • Researchers are studying the effects of different mitogens on cell growth.
10 3 noun n noun
• Any substance that governs the movement and development of cells during morphogenesis by forming a concentration gradient in the developing tissue.
Example sentence • Scientists are studying the role of morphogens in pattern formation.
9 3 noun
• a nonsteroidal anti-inflammatory drug (trade name Naprosyn) used in the treatment of arthritis and musculoskeletal inflammation and moderate pain
9 3 noun n noun
• a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
Example sentence • The atmosphere contains a high concentration of nitrogens .
10 3 noun n noun
• a general term for female steroid sex hormones that are secreted by the ovary and responsible for typical female sexual characteristics
Example sentence • High levels of oestrogens in the body can be found during pregnancy.
9 3 noun n noun
• any disease-producing agent (especially a virus or bacterium or other microorganism)
Example sentence • Certain pathogens can cause a variety of diseases in humans.
10 3 noun n
No meanings yet for this word...
Example sentence • The growth of phellogens is influenced by environmental factors.
8 3 noun n noun
• any substance characterized by its great flammability
Example sentence • The presence of pyrogens in the vaccine caused an adverse reaction.
6 2 noun
• A second crop of hay; aftermath.
8 3 noun n noun
• any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active
Example sentence • Pancreatic zymogens are activated in the small intestine.
9 2 noun, adjective n, adj noun
• (used in the plural) breeches made of buckskin
Example sentence • He wore a traditional costume with fringed buckskins and beaded moccasins.
8 2 noun n noun
• small intestines of hogs prepared as food
Example sentence • Some people enjoy eating chitlins with hot sauce.
6 2 noun n noun
• the first canonical hour; at daybreak
Example sentence • I always attend matins at the church every Sunday morning.
7 2 noun n noun
• a person who lacks good judgment
Example sentence • I always seem to be the muggins who gets stuck with all the dirty dishes.
8 2 noun n noun
• a bowling game that is played by rolling a bowling ball down a bowling alley at a target of nine wooden pins
Example sentence • We had a lot of fun playing ninepins at the bowling alley.
7 2 verb, noun v, n noun
• bowling down an alley at a target of ten wooden pins
Example sentence • He bowled a strike and knocked down all tenpins .
7 2 noun n noun
• the expensive white fur of the ermine
Example sentence • The ermines are small carnivorous mammals found in northern regions.
7 2 noun n noun
• A cylindrical, vertical shaft that extends through a glacier and is carved by meltwater from the glacier’s surface.
Example sentence • The moulins carved deep valleys into the glaciers.
4 1 noun n noun
• family based on male descent
Example sentence • The gens Iulia was one of the most distinguished patrician families in ancient Rome.
7 2 noun n noun
• engineer who was a brother of Ernst Werner von Siemens and who moved to England (1823-1883)
13 5 noun n noun
• any substance that acts as an antigen to cause agglutinin production
Example sentence • The presence of agglutinogens in blood determines a person's blood type.
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