| abdominocentesis | (noun) centesis of the belly to remove fluid for diagnosis | Synonyms: paracentesis |
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| abdominoplasty | (noun) cosmetic surgery of the abdomen to remove wrinkles and tighten the skin over the stomach | Synonyms: tummy tuck |
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| abdominousness | (noun) the bodily property of a protruding belly | Synonyms: paunchiness |
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| acetaminophen | (noun) an analgesic for mild pain but not for inflammation; also used as an antipyretic; (Datril, Tylenol, Panadol, Phenaphen, Tempra, and Anacin III are trademarks of brands of acetaminophen tablets) | Synonyms: Anacin III, Datril, Panadol, Phenaphen, Tempra, Tylenol |
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| actinoid | (noun) any of a series of radioactive elements with atomic numbers 89 through 103 | Synonyms: actinide, actinon |
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| actinolite | (noun) a green mineral of the amphibole group; calcium magnesium iron silicate | - |
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| actinometer | (noun) an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect) | - |
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| actinometry | (noun) measuring the intensity of electromagnetic radiation (especially of the sun's rays) | - |
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| actinomyces | (noun) soil-inhabiting saprophytes and disease-producing plant and animal parasites | - |
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| actinomycete | (noun) any bacteria (some of which are pathogenic for humans and animals) belonging to the order Actinomycetales | - |
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| actinomycin | (noun) any of various red antibiotics isolated from soil bacteria | - |
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| actinomycosis | (noun) disease of cattle that can be transmitted to humans; results from infection with actinomycetes; characterized by hard swellings that exude pus through long sinuses | - |
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| actinomyxidian | (noun) of or relating to parasites of worms | - |
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| actinon | (noun) any of a series of radioactive elements with atomic numbers 89 through 103 | Synonyms: actinide, actinoid |
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| actinopod | (noun) protozoa having stiff rodlike radiating pseudopods | - |
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| actinotherapy | (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance | Synonyms: irradiation, radiation, radiation therapy, radiotherapy |
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| actinozoan | (noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed | Synonyms: anthozoan |
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| adenocarcinoma | (noun) malignant tumor originating in glandular epithelium | Synonyms: glandular cancer, glandular carcinoma |
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| afibrinogenemia | (noun) the absence of fibrinogen in the plasma leading to prolonged bleeding | - |
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| agglutinogen | (noun) any substance that acts as an antigen to cause agglutinin production | - |
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| albino | (noun) an animal with congenital albinism | - |
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| (noun) a person with congenital albinism: white hair and milky skin; eyes are usually pink | - |
| albuminoid | (noun) a simple protein found in horny and cartilaginous tissues and in the lens of the eye | Synonyms: scleroprotein |
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| allopurinol | (noun) a drug (trade name Zyloprim) used to treat gout and other conditions in which there is an excessive buildup of uric acid | Synonyms: Zyloprim |
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| amino | (noun) the radical -NH2 | Synonyms: amino group |
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| aminoaciduria | (noun) abnormal presence of amino acids in the urine; usually a symptom of metabolic defects | - |
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| aminoalkane | (noun) a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals | Synonyms: amine |
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| aminobenzine | (noun) oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines | Synonyms: aniline, aniline oil, phenylamine |
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| aminomethane | (noun) a methyl with the hydrogen atom replaced by an amino radical | - |
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| aminopherase | (noun) a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) | Synonyms: aminotransferase, transaminase |
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| aminophylline | (noun) a theophylline derivative that is used as a bronchodilator in the treatment of bronchial asthma, emphysema, and bronchitis | - |
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| aminoplast | (noun) a plastic (synthetic resin) made from amino compounds; used as an adhesive and as a coating for paper and textiles | Synonyms: amino plastic, amino resin |
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| aminopyrine | (noun) a white crystalline substance used as an analgesic and antipyretic | Synonyms: amidopyrine |
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| aminotransferase | (noun) a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) | Synonyms: aminopherase, transaminase |
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| amrinone | (noun) a drug (trade name Inocor) used intravenously in heart failure; increases strength of contraction of myocardium | Synonyms: Inocor |
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| anemoclinometer | (noun) A type of instrument which measures the inclination of the wind to the horizontal plane. | - |
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| antineutrino | (noun) the antiparticle of a neutrino | - |
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| antinode | (noun) (physics) the point of maximum displacement in a periodic system | - |
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| antinomasia | (noun) substitution of a title for a name | - |
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| antinomian | (noun) a follower of the doctrine of antinomianism | - |
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| antinomianism | (noun) the theological doctrine that by faith and God's grace a Christian is freed from all laws (including the moral standards of the culture) | - |
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| antinomy | (noun) a contradiction between two statements that seem equally reasonable | - |
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| argentinosaur | (noun) huge herbivorous dinosaur of Cretaceous found in Argentina | - |
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| avitaminosis | (noun) any of several diseases caused by deficiency of one or more vitamins | Synonyms: hypovitaminosis |
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| bambino | (noun) a young child who is just beginning to walk | Synonyms: toddler, tot, yearling |
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| benzoquinone | (noun) any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyes | Synonyms: quinone |
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| binoculars | (noun) (plural) an optical instrument designed for simultaneous use by both eyes | Synonyms: field glasses, opera glasses |
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| binomial | (noun) (mathematics) a quantity expressed as a sum or difference of two terms; a polynomial with two terms | - |
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| bioflavinoid | (noun) a vitamin that maintains the resistance of cell and capillary walls to permeation | Synonyms: citrin, vitamin P |
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| cainogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cenogenesis, kainogenesis, kenogenesis |
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| cappuccino | (noun) equal parts of espresso and hot milk topped with cinnamon and nutmeg and usually whipped cream | Synonyms: cappuccino coffee, coffee cappuccino |
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| carcinogen | (noun) any substance that produces cancer | - |
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| carcinoid | (noun) a small tumor (benign or malignant) arising from the mucosa of the gastrointestinal tract; usually associated with excessive secretion of serotonin | - |
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| carcinoma | (noun) any malignant tumor derived from epithelial tissue; one of the four major types of cancer | - |
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| carcinosarcoma | (noun) a malignant neoplasm composed of carcinoma and sarcoma extensively intermixed | - |
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| casino | (noun) a card game in which cards face up on the table are taken with eligible cards in the hand | Synonyms: cassino |
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| (noun) a public building for gambling and entertainment | Synonyms: gambling casino |
| cassino | (noun) a card game in which cards face up on the table are taken with eligible cards in the hand | Synonyms: casino |
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| chino | (noun) a coarse twilled cotton fabric frequently used for uniforms | - |
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| chinoiserie | (noun) a style in art reflecting Chinese influence; elaborately decorated and intricately patterned | - |
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| chinook | (noun) large Pacific salmon valued as food; adults die after spawning | Synonyms: chinook salmon, king salmon, Oncorhynchus tshawytscha, quinnat salmon |
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| (noun) pink or white flesh of large Pacific salmon | Synonyms: chinook salmon, king salmon |
| (noun) a warm dry wind blowing down the eastern slopes of the Rockies | Synonyms: chinook wind, snow eater |
| chinos | (noun) (plural) trousers made with chino cloth | - |
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| clinocephalism | (noun) a congenital defect in which the top of the head is depressed (concave instead of convex) | Synonyms: clinocephaly |
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| clinocephaly | (noun) a congenital defect in which the top of the head is depressed (concave instead of convex) | Synonyms: clinocephalism |
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| clinodactyly | (noun) a congenital defect in which one or more toes or fingers are abnormally positioned | - |
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| clinometer | (noun) an instrument used by surveyors in order to measure an angle of inclination or elevation | Synonyms: inclinometer |
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| contadino | (noun) an Italian farmer | - |
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| criminologist | (noun) a specialist in criminology | - |
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| criminology | (noun) the scientific study of crime and criminal behavior and law enforcement | - |
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| crinoid | (noun) primitive echinoderms having five or more feathery arms radiating from a central disk | - |
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| crinoline | (noun) a stiff coarse fabric used to stiffen hats or clothing | - |
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| (noun) a full stiff petticoat made of crinoline fabric | - |
| (noun) a skirt stiffened with hoops | Synonyms: hoopskirt |
| cyprinodont | (noun) any member of the family Cyprinodontidae | - |
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| daminozide | (noun) a chemical sprayed on fruit trees to regulate their growth so the entire crop can be harvested at one time | Synonyms: Alar |
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| declinometer | (noun) an instrument for measuring magnetic declination | Synonyms: transit declinometer |
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| dehydroretinol | (noun) a viscous alcohol that is less active in mammals than is vitamin A1 | Synonyms: vitamin A2 |
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| deinocheirus | (noun) lightly built medium-sized theropod with long limbs and neck | - |
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| deinonychus | (noun) swift agile wolf-sized bipedal dinosaur having a large curved claw on each hind foot; of the Cretaceous | - |
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| dideoxyinosine | (noun) an antiviral drug used to combat HIV infection, a reverse transcriptase inhibitor | Synonyms: ddI, DDI, didanosine |
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| dinoceras | (noun) a variety of dinocerate | Synonyms: uintathere |
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| dinocerate | (noun) an extinct ungulate | - |
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| dinoflagellate | (noun) chiefly marine protozoa having two flagella; a chief constituent of plankton | - |
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| dinosaur | (noun) any of numerous extinct terrestrial reptiles of the Mesozoic era | - |
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| domino | (noun) a small rectangular block used in playing the game of dominoes; the face of each block has two equal areas that can bear 0 to 6 dots | - |
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| (noun) a mask covering the upper part of the face but with holes for the eyes | Synonyms: eye mask, half mask |
| (noun) a loose hooded cloak worn with a half mask as part of a masquerade costume | - |
| dominoes | (noun) any of several games played with small rectangular blocks | Synonyms: dominos |
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| dominos | (noun) any of several games played with small rectangular blocks | Synonyms: dominoes |
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| dronabinol | (noun) psychoactive substance present in marijuana; used therapeutically to control nausea associated with cancer therapy | - |
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| echinocactus | (noun) any cactus of the genus Echinocactus; strongly ribbed and very spiny; southwestern United States to Brazil | Synonyms: barrel cactus |
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| echinococcosis | (noun) infestation with larval echinococci (tapeworms) | Synonyms: hydatid disease, hydatidosis |
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| echinococcus | (noun) tapeworms whose larvae are parasitic in humans and domestic animals | - |
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| echinoderm | (noun) marine invertebrates with tube feet and five-part radially symmetrical bodies | - |
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| electroretinogram | (noun) a graphical recording of the electrical activity of the retina that results when light is flashed into the eye | - |
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| endocrinologist | (noun) physician who specializes in the diagnosis and treatment of conditions affecting the endocrine system | - |
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| endocrinology | (noun) the branch of medicine dealing with the endocrine glands and their secretions | - |
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| eosinopenia | (noun) a decrease in the number of eosinophils in the blood | - |
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| eosinophil | (noun) a leukocyte readily stained with eosin | Synonyms: eosinophile |
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| eosinophile | (noun) a leukocyte readily stained with eosin | Synonyms: eosinophil |
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| eosinophilia | (noun) a symptom of allergic states; increased eosinophils in the blood | - |
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| equinoctial | (noun) the great circle on the celestial sphere midway between the celestial poles | Synonyms: celestial equator, equinoctial circle, equinoctial line |
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| equinox | (noun) (astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic | Synonyms: equinoctial point |
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| (noun) either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length | - |
| fibrinogen | (noun) a protein present in blood plasma; converts to fibrin when blood clots | Synonyms: factor I |
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| fibrinolysin | (noun) an enzyme that dissolves the fibrin of blood clots | Synonyms: plasmin |
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| fibrinolysis | (noun) a normal ongoing process that dissolves fibrin and results in the removal of small blood clots | - |
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