| ablepharia | (noun) a congenital absence of eyelids (partial or complete) | - |
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| acanthocephalan | (noun) any of various worms living parasitically in intestines of vertebrates having a retractile proboscis covered with many hooked spines | Synonyms: spiny-headed worm |
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| accept | (verb) consider or hold as true | - |
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| (verb) react favorably to; consider right and proper | - |
| (verb) tolerate or accommodate oneself to | Synonyms: live with, swallow |
| (verb) be sexually responsive to, used of a female domesticated mammal | - |
| (verb) give an affirmative reply to; respond favorably to | Synonyms: consent, go for |
| (verb) receive willingly something given or offered | Synonyms: have, take |
| (verb) take on as one's own the expenses or debts of another person | Synonyms: assume, bear, take over |
| (verb) admit into a group or community | Synonyms: admit, take, take on |
| (verb) receive (a report) officially, as from a committee | - |
| (verb) make use of or accept for some purpose | Synonyms: take |
| (verb) be designed to hold or take | Synonyms: take |
| acceptability | (noun) satisfactoriness by virtue of conforming to approved standards | Synonyms: acceptableness |
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| acceptable | (adjective) worthy of acceptance or satisfactory | - |
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| (adjective) adequate for the purpose | - |
| (adjective) meeting requirements | Synonyms: decent, satisfactory |
| (adjective) judged to be in conformity with approved usage | - |
| acceptableness | (noun) satisfactoriness by virtue of conforming to approved standards | Synonyms: acceptability |
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| acceptably | (adverb) in an acceptable (but not outstanding) manner | Synonyms: so-so, tolerably |
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| acceptance | (noun) the act of accepting with approval; favorable reception | Synonyms: acceptation, adoption, espousal |
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| (noun) the act of taking something that is offered | - |
| (noun) a disposition to tolerate or accept people or situations | Synonyms: sufferance, toleration |
| (noun) the mental attitude that something is believable and should be accepted as true | Synonyms: credence |
| (noun) (contract law) words signifying consent to the terms of an offer (thereby creating a contract) | - |
| (noun) a time draft drawn on and accepted by a bank | Synonyms: banker's acceptance |
| (noun) the state of being acceptable and accepted | - |
| acceptant | (adjective) accepting willingly | Synonyms: acceptive |
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| acceptation | (noun) the act of accepting with approval; favorable reception | Synonyms: acceptance, adoption, espousal |
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| (noun) the accepted meaning of a word | Synonyms: word meaning, word sense |
| (noun) acceptance as true or valid | - |
| accepted | (adjective) generally approved or compelling recognition | Synonyms: recognised, recognized |
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| accepting | (adjective) tolerating without protest | - |
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| acceptive | (adjective) inclined to accept rather than reject | - |
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| (adjective) accepting willingly | Synonyms: acceptant |
| acceptor | (noun) the person (or institution) who accepts a check or draft and becomes responsible for paying the party named in the draft when it matures | - |
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| (noun) (chemistry) in the formation of a coordinate bond it is the compound to which electrons are donated | - |
| acephalia | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalism, acephaly |
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| acephalism | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalia, acephaly |
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| acephalous | (adjective) lacking a head or a clearly defined head | - |
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| acephaly | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalia, acephalism |
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| acrocephaly | (noun) a congenital abnormality of the skull; the top of the skull assumes a cone shape | Synonyms: oxycephaly |
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| addlepated | (adjective) stupid and confused | Synonyms: addlebrained, muddleheaded, puddingheaded |
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| adept | (adjective) having or showing knowledge and skill and aptitude | Synonyms: expert, good, practiced, proficient, skilful, skillful |
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| (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wiz, wizard |
| adeptness | (noun) skillful performance or ability without difficulty | Synonyms: adroitness, deftness, facility, quickness |
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| aepyornis | (noun) huge (to 9 ft.) extinct flightless bird of Madagascar | Synonyms: elephant bird |
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| aleph | (noun) the 1st letter of the Hebrew alphabet | - |
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| amboceptor | (noun) an immune body formed in the blood during infection or immunization that serves to link the complement to the antigen. | - |
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| analeptic | (adjective) stimulating the central nervous system | - |
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| (noun) a medication used as a stimulant to the central nervous system | - |
| anencephalia | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephaly |
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| anencephalic | (adjective) characterized by partial or total absence of a brain | Synonyms: anencephalous |
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| anencephalous | (adjective) characterized by partial or total absence of a brain | Synonyms: anencephalic |
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| anencephaly | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephalia |
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| antepartum | (adjective) occurring or existing before birth | Synonyms: antenatal, prenatal |
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| antepenult | (noun) the 3rd syllable of a word counting back from the end | Synonyms: antepenultima, antepenultimate |
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| antepenultima | (noun) the 3rd syllable of a word counting back from the end | Synonyms: antepenult, antepenultimate |
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| antepenultimate | (adjective) third from last | - |
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| (noun) the 3rd syllable of a word counting back from the end | Synonyms: antepenult, antepenultima |
| antidepressant | (noun) any of a class of drugs used to treat depression; often have undesirable side effects | Synonyms: antidepressant drug |
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| antiepileptic | (noun) a drug used to treat or prevent convulsions (as in epilepsy) | Synonyms: anticonvulsant, anticonvulsant drug, antiepileptic drug |
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| antilepton | (noun) the antiparticle of a lepton | - |
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| antiredeposition | (noun) the process of preventing redeposition | - |
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| antisepsis | (noun) the process of inhibiting the growth and multiplication of microorganisms | Synonyms: asepsis |
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| (noun) (of non-living objects) the state of being free of pathogenic organisms | Synonyms: asepsis, sterileness, sterility |
| antiseptic | (adjective) thoroughly clean and free of or destructive to disease-causing organisms | - |
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| (adjective) devoid of objectionable language | - |
| (adjective) clean and honest | - |
| (adjective) freeing from error or corruption | - |
| (noun) a substance that destroys micro-organisms that carry disease without harming body tissues | - |
| antisepticize | (verb) disinfect with an antiseptic | - |
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| apperception | (noun) the process whereby perceived qualities of an object are related to past experience | - |
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| apperceptive | (adjective) able to relate new percepts to past experience | - |
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| archepiscopal | (adjective) of or associated with an archbishop | Synonyms: archiepiscopal |
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| archiepiscopal | (adjective) of or associated with an archbishop | Synonyms: archepiscopal |
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| asclepiad | (noun) any plant of the family Asclepiadaceae | - |
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| asclepiadaceous | (adjective) of or relating to plants of the milkweed family | - |
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| asepsis | (noun) the process of inhibiting the growth and multiplication of microorganisms | Synonyms: antisepsis |
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| (noun) (of non-living objects) the state of being free of pathogenic organisms | Synonyms: antisepsis, sterileness, sterility |
| aseptic | (adjective) free of or using methods to keep free of pathological microorganisms | Synonyms: sterile |
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| asleep | (adjective) in a state of sleep | - |
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| (adjective) dead | Synonyms: at peace, at rest, deceased, departed, gone |
| (adjective) lacking sensation | Synonyms: benumbed, numb |
| (adverb) into a sleeping state | - |
| (adverb) in the sleep of death | - |
| backswept | (adjective) used of hair | Synonyms: sweptback |
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| barkeep | (noun) an employee who mixes and serves alcoholic drinks at a bar | Synonyms: barkeeper, bartender, mixologist |
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| barkeeper | (noun) an employee who mixes and serves alcoholic drinks at a bar | Synonyms: barkeep, bartender, mixologist |
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| baroreceptor | (noun) a sensory receptor that responds to pressure | - |
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| beekeeper | (noun) a farmer who keeps bees for their honey | Synonyms: apiarist, apiculturist |
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| beekeeping | (noun) the cultivation of bees on a commercial scale for the production of honey | Synonyms: apiculture |
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| beep | (noun) a short high tone produced as a signal or warning | Synonyms: bleep |
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| (verb) call, summon, or alert with a beeper | - |
| (verb) make a strident noise | Synonyms: blare, claxon, honk, toot |
| beeper | (noun) an electronic device that generates a series of beeps when the person carrying it is being paged | Synonyms: pager |
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| benzodiazepine | (noun) any of several similar lipophilic amines used as tranquilizers or sedatives or hypnotics or muscle relaxants; chronic use can lead to dependency | - |
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| beplaster | (verb) cover conspicuously or thickly, as by pasting something on | Synonyms: plaster |
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| bicephalous | (adjective) having two heads | - |
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| biceps | (noun) any skeletal muscle having two origins (but especially the muscle that flexes the forearm) | - |
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| biteplate | (noun) a removable dental appliance that is worn in the palate for diagnostic or therapeutic purposes | Synonyms: bite plate |
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| bleep | (noun) a short high tone produced as a signal or warning | Synonyms: beep |
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| (verb) emit a single short high-pitched signal | - |
| blepharism | (noun) condition in which a person blinks continuously | - |
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| blepharitis | (noun) inflammation of the eyelids characterized by redness and swelling and dried crusts | - |
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| blepharospasm | (noun) spasm of the eyelid muscle resulting in closure of the eye | - |
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| bluepoint | (noun) small edible oyster typically from the southern shore of Long Island | Synonyms: blue point |
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| (noun) oysters originally from Long Island Sound but now from anywhere along the northeastern seacoast; usually eaten raw | Synonyms: blue point |
| blueprint | (noun) photographic print of plans or technical drawings etc. | - |
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| (noun) something intended as a guide for making something else | Synonyms: design, pattern |
| (verb) make a blueprint of | Synonyms: draft, draught |
| bookkeeper | (noun) someone who records the transactions of a business | - |
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| bookkeeping | (noun) the activity of recording business transactions | Synonyms: clerking |
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| bopeep | (noun) a game played with young children; you hide your face and suddenly reveal it as you say boo! | Synonyms: peekaboo |
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| brachycephalic | (adjective) having a short broad head with a cephalic index of over 80 | Synonyms: brachycranial, brachycranic |
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| (noun) an adult with a short broad head | - |
| brachycephalism | (noun) the quality of being brachycephalic | Synonyms: brachycephaly |
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| brachycephaly | (noun) the quality of being brachycephalic | Synonyms: brachycephalism |
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| candlepin | (noun) a bowling pin that is thin by comparison with a tenpin | - |
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| candlepins | (noun) a bowling game using slender bowling pins | Synonyms: candlepin bowling |
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| candlepower | (noun) luminous intensity measured in candelas | Synonyms: light intensity |
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| cassareep | (noun) a flavoring made by boiling down the juice of the bitter cassava; used in West Indian cooking | - |
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| catalepsy | (noun) a trancelike state with loss of voluntary motion and failure to react to stimuli | - |
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| cataleptic | (adjective) of or having characteristics of or affected with catalepsy | - |
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| (noun) a person suffering from catalepsy | - |
| centrepiece | (noun) something placed at the center of something else (as on a table) | Synonyms: centerpiece |
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| (noun) the central or most important feature | Synonyms: centerpiece |
| cephalalgia | (noun) pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs | Synonyms: head ache, headache |
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| cephalaspid | (noun) extinct jawless fish of the Devonian with armored head | Synonyms: osteostracan |
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| cephalexin | (noun) a cephalosporin antibiotic (trade names Keflex and Keflin and Keftab) commonly prescribed for mild to moderately severe infections of the skin or ears or throat or lungs or urinary tract | Synonyms: Keflex, Keflin, Keftab |
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| cephalhematoma | (noun) a collection of blood under the scalp of a newborn; caused by pressure during birth | Synonyms: cephalohematoma |
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| cephalic | (adjective) of or relating to the head | - |
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| cephalitis | (noun) inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use) | Synonyms: encephalitis, phrenitis |
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| cephalochordate | (noun) fish-like animals having a notochord rather than a true spinal column | - |
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| cephaloglycin | (noun) antibiotic related to cephalosporin but no longer in common use | Synonyms: Kafocin |
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| cephalohematoma | (noun) a collection of blood under the scalp of a newborn; caused by pressure during birth | Synonyms: cephalhematoma |
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| cephalometry | (noun) measurement of human heads | - |
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| cephalopod | (adjective) relating or belonging to the class Cephalopoda | Synonyms: cephalopodan |
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| (noun) marine mollusk characterized by well-developed head and eyes and sucker-bearing tentacles | Synonyms: cephalopod mollusk |
| cephalopodan | (adjective) relating or belonging to the class Cephalopoda | Synonyms: cephalopod |
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| cephaloridine | (noun) a broad spectrum semisynthetic antibiotic produced by modifying cephalosporin | - |
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| cephalosporin | (noun) one of several broad spectrum antibiotic substances obtained from fungi and related to penicillin (trade names Mefoxin); addition of side chains has produced semisynthetic antibiotics with greater antibacterial activity | Synonyms: Mefoxin |
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| cephalothin | (noun) a semisynthetic analogue of cephalosporin | - |
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| cheep | (noun) the short weak cry of a young bird | Synonyms: peep |
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| (verb) make high-pitched sounds | Synonyms: chirp, chirrup, peep |
| cheeseparing | (adjective) giving or spending with reluctance | Synonyms: close, near, penny-pinching, skinny |
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| chemoreceptive | (adjective) of or relating to chemoreceptors | - |
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