| aeroembolism | (noun) obstruction of the circulatory system caused by an air bubble as, e.g., accidentally during surgery or hypodermic injection or as a complication from scuba diving | Synonyms: air embolism, gas embolism |
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| (noun) pain resulting from rapid change in pressure | Synonyms: air embolism, bends, caisson disease, decompression sickness, gas embolism |
| aloe | (noun) succulent plants having rosettes of leaves usually with fiber like hemp and spikes of showy flowers; found chiefly in Africa | - |
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| aloes | (noun) a purgative made from the leaves of aloe | Synonyms: bitter aloes |
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| alstroemeria | (noun) any of various South American plants of the genus Alstroemeria valued for their handsome umbels of beautiful flowers | - |
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| amenorrhoea | (noun) absence or suppression of normal menstrual flow | Synonyms: amenia, amenorrhea |
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| amenorrhoeal | (adjective) related to the suppression of normal menstrual flow for any reason other than pregnancy | Synonyms: amenorrheal, amenorrheic, amenorrhoeic |
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| amenorrhoeic | (adjective) related to the suppression of normal menstrual flow for any reason other than pregnancy | Synonyms: amenorrheal, amenorrheic, amenorrhoeal |
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| amoeba | (noun) naked freshwater or marine or parasitic protozoa that form temporary pseudopods for feeding and locomotion | Synonyms: ameba |
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| amoeban | (adjective) pertaining to or resembling amoebae | Synonyms: ameban, amebic, amebous, amoebic, amoebous |
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| amoebiasis | (noun) infection by a disease-causing ameba | Synonyms: amebiasis, amebiosis, amoebiosis |
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| amoebic | (adjective) pertaining to or resembling amoebae | Synonyms: ameban, amebic, amebous, amoeban, amoebous |
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| amoebiosis | (noun) infection by a disease-causing ameba | Synonyms: amebiasis, amebiosis, amoebiasis |
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| amoeboid | (adjective) like an amoeba (especially in having a variable irregular shape) | Synonyms: ameboid |
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| amoebous | (adjective) pertaining to or resembling amoebae | Synonyms: ameban, amebic, amebous, amoeban, amoebic |
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| androecium | (noun) a male gametoecium | - |
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| angioedema | (noun) recurrent large circumscribed areas of subcutaneous edema; onset is sudden and it disappears within 24 hours; seen mainly in young women, often as an allergic reaction to food or drugs | Synonyms: atrophedema, giant hives, periodic edema, Quincke's edema |
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| anoestrous | (adjective) of or relating to anestrus | Synonyms: anestric, anestrous |
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| anoestrum | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anestrus, anoestrus |
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| anoestrus | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anestrus, anoestrum |
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| apnoeic | (adjective) of or relating to apnea | Synonyms: apneic |
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| apoenzyme | (noun) a protein that combines with a coenzyme to form an active enzyme | - |
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| asafoetida | (noun) the brownish gum resin of various plants; has strong taste and odor; formerly used as an antispasmodic | Synonyms: asafetida |
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| autoecious | (adjective) of parasites especially rust fungi; completing the entire life cycle on a single host | Synonyms: homoecious |
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| autoerotic | (adjective) sexually satisfying yourself (as by masturbation) | - |
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| autoeroticism | (noun) using your own body as a sexual object | Synonyms: autoerotism |
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| autoerotism | (noun) using your own body as a sexual object | Synonyms: autoeroticism |
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| backhoe | (noun) an excavator whose shovel bucket is attached to a hinged boom and is drawn backward to move earth | - |
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| beroe | (noun) delicately iridescent thimble-shaped ctenophores | - |
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| bioelectricity | (noun) electric phenomena in animals or plants | - |
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| bioengineering | (noun) the branch of engineering science in which biological science is used to study the relation between workers and their environments | Synonyms: biotechnology, ergonomics |
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| bioethics | (noun) the branch of ethics that studies moral values in the biomedical sciences | - |
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| blastocoel | (noun) the fluid-filled cavity inside a blastula | Synonyms: blastocele, blastocoele, cleavage cavity, segmentation cavity |
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| blastocoele | (noun) the fluid-filled cavity inside a blastula | Synonyms: blastocele, blastocoel, cleavage cavity, segmentation cavity |
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| blastocoelic | (adjective) of or relating to a segmentation cavity | - |
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| boeuf | (noun) meat from an adult domestic bovine | Synonyms: beef |
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| cacoethes | (noun) an irrational but irresistible motive for a belief or action | Synonyms: mania, passion |
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| canoe | (noun) small and light boat; pointed at both ends; propelled with a paddle | - |
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| (verb) travel by canoe | - |
| canoeist | (noun) someone paddling a canoe | Synonyms: paddler |
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| chapelgoer | (noun) a Protestant in England who is not a member of the Church of England | Synonyms: Nonconformist |
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| chigoe | (noun) small tropical flea; the fertile female burrows under the skin of the host including humans | Synonyms: chigger, chigoe flea, Tunga penetrans |
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| churchgoer | (noun) a religious person who goes to church regularly | Synonyms: church member |
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| coeducate | (verb) educate persons of both sexes together | Synonyms: co-educate |
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| coeducation | (noun) education of men and women in the same institutions | - |
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| coeducational | (adjective) attended by members of both sexes | Synonyms: co-ed |
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| coefficient | (noun) a constant number that serves as a measure of some property or characteristic | - |
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| coelacanth | (noun) fish thought to have been extinct since the Cretaceous period but found in 1938 off the coast of Africa | Synonyms: Latimeria chalumnae |
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| coelenterate | (noun) radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms | Synonyms: cnidarian |
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| coelenteron | (noun) the saclike body cavity of a coelenterate | - |
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| coeliac | (adjective) of or in or belonging to the cavity of the abdomen | Synonyms: celiac |
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| coelogyne | (noun) any of various orchids of the genus Coelogyne with: clusters of fragrant lacy snow-white flowers; salmon-pink solitary flowers; chainlike racemes of topaz and chocolate brown flowers; spikes of delicate white spice-scented flowers; emerald green flowers marked with blue-black | - |
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| coelom | (noun) a cavity in the mesoderm of an embryo that gives rise in humans to the pleural cavity and pericardial cavity and peritoneal cavity | Synonyms: celom, celoma |
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| coelophysis | (noun) one of the oldest known dinosaurs; late Triassic; cannibalistic | - |
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| coelostat | (noun) optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror | - |
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| coenobite | (noun) a member of a religious order living in common | Synonyms: cenobite |
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| coenobitic | (adjective) of or relating to or befitting cenobites or their practices of communal living | Synonyms: cenobitic, cenobitical, coenobitical |
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| coenobitical | (adjective) of or relating to or befitting cenobites or their practices of communal living | Synonyms: cenobitic, cenobitical, coenobitic |
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| coenzyme | (noun) a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes | - |
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| coequal | (adjective) having the same standing before the law | - |
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| coerce | (verb) to cause to do through pressure or necessity, by physical, moral or intellectual means | Synonyms: force, hale, pressure, squeeze |
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| coercion | (noun) using force to cause something to occur | Synonyms: compulsion |
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| (noun) the act of compelling by force of authority | - |
| coercive | (adjective) serving or intended to coerce | - |
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| coetaneous | (adjective) of the same period | Synonyms: coeval, contemporaneous |
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| coeval | (adjective) of the same period | Synonyms: coetaneous, contemporaneous |
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| (noun) a person of nearly the same age as another | Synonyms: contemporary |
| coevals | (noun) all the people living at the same time or of approximately the same age | Synonyms: contemporaries, generation |
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| coexist | (verb) exist together | Synonyms: cohabit |
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| (verb) coexist peacefully, as of nations | - |
| coexistence | (noun) existing peacefully together | - |
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| coexistent | (adjective) existing at the same time | Synonyms: coexisting |
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| coexisting | (adjective) existing at the same time | Synonyms: coexistent |
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| coextension | (noun) equality of extension or duration | - |
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| coextensive | (adjective) being of equal extent or scope or duration | Synonyms: conterminous, coterminous |
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| cohoe | (noun) small salmon of northern Pacific coasts and the Great Lakes | Synonyms: blue jack, coho, coho salmon, Oncorhynchus kisutch, silver salmon |
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| (noun) fatty pinkish flesh of small salmon caught in the Pacific and Great Lakes | Synonyms: coho, coho salmon, silver salmon |
| corticoefferent | (adjective) of a nerve fiber passing outward from the cerebral cortex | Synonyms: corticifugal, corticofugal |
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| dianoetic | (adjective) proceeding to a conclusion by reason or argument rather than intuition | Synonyms: discursive |
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| diarrhoea | (noun) frequent and watery bowel movements; can be a symptom of infection or food poisoning or colitis or a gastrointestinal tumor | Synonyms: diarrhea, looseness, looseness of the bowels |
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| diarrhoeal | (adjective) of or relating to diarrhea | Synonyms: diarrheal, diarrheic, diarrhetic, diarrhoeic, diarrhoetic |
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| diarrhoeic | (adjective) of or relating to diarrhea | Synonyms: diarrheal, diarrheic, diarrhetic, diarrhoeal, diarrhoetic |
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| diarrhoetic | (adjective) of or relating to diarrhea | Synonyms: diarrheal, diarrheic, diarrhetic, diarrhoeal, diarrhoeic |
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| dichlorodiphenyltrichloroethane | (noun) an insecticide that is also toxic to animals and humans; banned in the United States since 1972 | Synonyms: DDT |
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| diethylstilboestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilbestrol, stilbestrol, stilboestrol |
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| dioecian | (adjective) having male and female reproductive organs in separate plants or animals | Synonyms: dioecious |
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| dioecious | (adjective) having male and female reproductive organs in separate plants or animals | Synonyms: dioecian |
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| dioestrous | (adjective) (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity | Synonyms: diestrous, diestrual, dioestrual |
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| dioestrual | (adjective) (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity | Synonyms: diestrous, diestrual, dioestrous |
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| doe | (noun) mature female of mammals of which the male is called `buck' | - |
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| doer | (noun) a person who acts and gets things done | Synonyms: actor, worker |
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| doeskin | (noun) a fine smooth soft woolen fabric | - |
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| (noun) soft leather from deerskin or lambskin | - |
| dominoes | (noun) any of several games played with small rectangular blocks | Synonyms: dominos |
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| dyspnoea | (noun) difficult or labored respiration | Synonyms: dyspnea |
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| dyspnoeal | (adjective) not breathing or able to breathe except with difficulty | Synonyms: breathless, dyspneal, dyspneic, dyspnoeic |
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| dyspnoeic | (adjective) not breathing or able to breathe except with difficulty | Synonyms: breathless, dyspneal, dyspneic, dyspnoeal |
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| echoencephalogram | (noun) a graphical image of the brain produced by an echoencephalograph | - |
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| echoencephalograph | (noun) a sonograph that creates an image of the brain and its abnormalities | - |
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| echoencephalography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study the anatomy of the brain | - |
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| electroencephalogram | (noun) a graphical record of electrical activity of the brain; produced by an electroencephalograph | Synonyms: EEG, encephalogram |
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| electroencephalograph | (noun) medical instrument that records electric currents generated by the brain | - |
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| electroencephalographic | (adjective) of or relating to an electroencephalograph | - |
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| endoergic | (adjective) (of a nuclear reaction) occurring with absorption of energy | Synonyms: energy-absorbing |
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| eupnoea | (noun) normal relaxed breathing | Synonyms: eupnea |
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| eupnoeic | (adjective) passing or able to pass air in and out of the lungs normally; sometimes used in combination | Synonyms: breathing, eupneic |
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| evildoer | (noun) a person who sins (without repenting) | Synonyms: sinner |
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