| abdominal | (noun) the muscles of the abdomen | Synonyms: ab, abdominal muscle |
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| abomination | (noun) an action that is vicious or vile; an action that arouses disgust or abhorrence | - |
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| (noun) hate coupled with disgust | Synonyms: abhorrence, detestation, execration, loathing, odium |
| (noun) a person who is loathsome or disgusting | - |
| abominator | (noun) one who hates or loathes | Synonyms: loather |
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| aboriginal | (noun) an indigenous person who was born in a particular place | Synonyms: aborigine, indigen, indigene, native |
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| acroanaesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanesthesia |
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| adrenal | (noun) either of a pair of complex endocrine glands situated near the kidney | Synonyms: adrenal gland, suprarenal gland |
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| adrenalectomy | (noun) surgical removal of one or both adrenal glands | Synonyms: suprarenalectomy |
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| adrenaline | (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action | Synonyms: Adrenalin, epinephrin, epinephrine |
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| adrenarche | (noun) the increase in activity of the adrenal glands just before puberty | - |
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| adynamia | (noun) lack of strength or vigor (especially from illness) | - |
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| aerodynamics | (noun) the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow | Synonyms: aeromechanics |
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| aeronaut | (noun) someone who operates an aircraft | Synonyms: aviator, flier, flyer |
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| aeronautics | (noun) the theory and practice of navigation through air or space | Synonyms: astronautics |
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| aeschynanthus | (noun) a plant of the genus Aeschynanthus having somewhat red or orange flowers and seeds having distinctive hairs at base and apex | - |
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| affectionateness | (noun) a quality proceeding from feelings of affection or love | Synonyms: fondness, lovingness, warmth |
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| (noun) a positive feeling of liking | Synonyms: affection, fondness, heart, philia, tenderness, warmheartedness, warmness |
| aficionado | (noun) a serious devotee of some particular music genre or musical performer | - |
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| (noun) a fan of bull fighting | - |
| agglutination | (noun) the building of words from component morphemes that retain their form and meaning in the process of combining | - |
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| (noun) a clumping of bacteria or red cells when held together by antibodies (agglutinins) | - |
| (noun) the coalescing of small particles that are suspended in solution; these larger masses are then (usually) precipitated | Synonyms: agglutinating activity |
| agnail | (noun) a loose narrow strip of skin near the base of a fingernail; tearing it produces a painful sore that is easily infected | Synonyms: hangnail |
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| agnate | (noun) one related on the father's side | Synonyms: patrikin, patrilineal kin, patrilineal sib, patrisib |
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| agnathan | (noun) eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms | Synonyms: jawless fish, jawless vertebrate |
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| agnation | (noun) line of descent traced through the paternal side of the family | Synonyms: patrilineage |
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| alendronate | (noun) a tablet (trade name Fosamax) prescribed to prevent or treat osteoporosis in women after menopause | Synonyms: Fosamax |
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| alienage | (noun) the quality of being alien | Synonyms: alienism |
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| alienation | (noun) the action of alienating; the action of causing to become unfriendly | - |
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| (noun) (law) the voluntary and absolute transfer of title and possession of real property from one person to another | - |
| (noun) the feeling of being alienated from other people | Synonyms: disaffection, estrangement |
| (noun) separation resulting from hostility | Synonyms: estrangement |
| alienator | (noun) an unpleasant person who causes friendly people to become indifferent or unfriendly or hostile | - |
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| alkylbenzenesulfonate | (noun) sulfonate of alkyl benzene | - |
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| almanac | (noun) an annual publication containing tabular information in a particular field or fields arranged according to the calendar of a given year | - |
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| (noun) an annual publication including weather forecasts and other miscellaneous information arranged according to the calendar of a given year | Synonyms: farmer's calendar |
| alternate | (noun) someone who takes the place of another person | Synonyms: replacement, surrogate |
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| alternation | (noun) successive change from one thing or state to another and back again | - |
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| alternative | (noun) one of a number of things from which only one can be chosen | Synonyms: choice, option |
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| alternator | (noun) an old term for an electric generator that produces alternating current (especially in automobiles) | - |
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| alumina | (noun) any of various forms of aluminum oxide occurring naturally as corundum | Synonyms: aluminium oxide, aluminum oxide |
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| aluminate | (noun) a compound of alumina and a metallic oxide | - |
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| alumna | (noun) a female person who has received a degree from a school (high school or college or university) | - |
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| amboyna | (noun) tree native to southeastern Asia having reddish wood with a mottled or striped black grain | Synonyms: padauk, padouk, Pterocarpus indicus |
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| (noun) mottled curly-grained wood of Pterocarpus indicus | Synonyms: Andaman redwood |
| amenability | (noun) the trait of being cooperative | Synonyms: amenableness, cooperativeness |
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| amenableness | (noun) the trait of being cooperative | Synonyms: amenability, cooperativeness |
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| ammonal | (noun) Ammonal is an explosive made up of ammonium nitrate and aluminum powder. | - |
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| amphisbaena | (noun) (classical mythology) a serpent with a head at each end of its body | - |
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| ana | (noun) a collection of anecdotes about a person or place | - |
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| anabiosis | (noun) suspended animation in organisms during periods of extreme drought from which they revive when moisture returns | - |
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| anabolism | (noun) the synthesis in living organisms of more complex substances (e.g., living tissue) from simpler ones together with the storage of energy | Synonyms: constructive metabolism |
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| anachronism | (noun) an artifact that belongs to another time | - |
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| (noun) a person who seems to be displaced in time; who belongs to another age | - |
| (noun) something located at a time when it could not have existed or occurred | Synonyms: misdating, mistiming |
| anaclisis | (noun) (psychoanalysis) relationship marked by strong dependence on others; especially a libidinal attachment to e.g. a parental figure | - |
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| anacoluthia | (noun) an abrupt change within a sentence from one syntactic structure to another | Synonyms: anacoluthon |
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| anacoluthon | (noun) an abrupt change within a sentence from one syntactic structure to another | Synonyms: anacoluthia |
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| anaconda | (noun) large arboreal boa of tropical South America | Synonyms: Eunectes murinus |
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| anadiplosis | (noun) repetition of the final words of a sentence or line at the beginning of the next | Synonyms: reduplication |
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| anaemia | (noun) a deficiency of red blood cells | Synonyms: anemia |
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| (noun) a lack of vitality | Synonyms: anemia |
| anaerobe | (noun) an organism (especially a bacterium) that does not require air or free oxygen to live | - |
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| anaesthesia | (noun) loss of bodily sensation with or without loss of consciousness | Synonyms: anesthesia |
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| anaesthetic | (noun) a drug that causes temporary loss of bodily sensations | Synonyms: anaesthetic agent, anesthetic, anesthetic agent |
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| anaesthetist | (noun) a specialist who administers an anesthetic to a patient before he is treated | Synonyms: anesthesiologist, anesthetist |
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| anaglyph | (noun) anything carved in low relief | - |
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| (noun) moving or still pictures in contrasting colors that appear three-dimensional when superimposed | - |
| anaglyphy | (noun) the process of producing pictures in contrasting colors that appear three-dimensional when superimposed and viewed through spectacles with one red and one green lens | - |
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| anagnost | (noun) a cleric in the minor orders of the Eastern Orthodox Church who reads the lessons aloud in the liturgy (analogous to the lector in the Roman Catholic Church) | - |
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| anagoge | (noun) a mystical or allegorical interpretation (especially of Scripture) | - |
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| anagram | (noun) a word or phrase spelled by rearranging the letters of another word or phrase | - |
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| anagrams | (noun) a game whose object is to form words from a group of randomly chosen letters | - |
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| analbuminemia | (noun) an abnormally low level of albumin in the blood serum | - |
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| analecta | (noun) a collection of excerpts from a literary work | Synonyms: analects |
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| analects | (noun) a collection of excerpts from a literary work | Synonyms: analecta |
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| analeptic | (noun) a medication used as a stimulant to the central nervous system | - |
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| analgesia | (noun) absence of the sense of pain without loss of consciousness | - |
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| analgesic | (noun) a medicine used to relieve pain | Synonyms: anodyne, pain pill, painkiller |
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| analog | (noun) something having the property of being analogous to something else | Synonyms: analogue, parallel |
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| analogist | (noun) someone who looks for analogies or who reasons by analogy | - |
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| analogue | (noun) something having the property of being analogous to something else | Synonyms: analog, parallel |
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| analogy | (noun) drawing a comparison in order to show a similarity in some respect | - |
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| (noun) an inference that if things agree in some respects they probably agree in others | - |
| (noun) the religious belief that between creature and creator no similarity can be found so great but that the dissimilarity is always greater; any analogy between God and humans will always be inadequate | Synonyms: doctrine of analogy |
| analphabet | (noun) an illiterate person who does not know the alphabet | Synonyms: analphabetic |
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| analphabetic | (noun) an illiterate person who does not know the alphabet | Synonyms: analphabet |
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| analphabetism | (noun) an inability to read | Synonyms: illiteracy |
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| analysand | (noun) a person undergoing psychoanalysis | - |
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| analyser | (noun) an instrument that performs analyses | Synonyms: analyzer |
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| analysis | (noun) an investigation of the component parts of a whole and their relations in making up the whole | - |
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| (noun) a set of techniques for exploring underlying motives and a method of treating various mental disorders; based on the theories of Sigmund Freud | Synonyms: depth psychology, psychoanalysis |
| (noun) the abstract separation of a whole into its constituent parts in order to study the parts and their relations | Synonyms: analytic thinking |
| (noun) a branch of mathematics involving calculus and the theory of limits; sequences and series and integration and differentiation | - |
| (noun) a form of literary criticism in which the structure of a piece of writing is analyzed | - |
| (noun) the use of closed-class words instead of inflections: e.g., `the father of the bride' instead of `the bride's father' | - |
| analyst | (noun) someone who is skilled at analyzing data | - |
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| (noun) a licensed practitioner of psychoanalysis | Synonyms: psychoanalyst |
| (noun) an expert who studies financial data (on credit or securities or sales or financial patterns etc.) and recommends appropriate business actions | - |
| analyticity | (noun) the property of being analytic | - |
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| analyzer | (noun) an instrument that performs analyses | Synonyms: analyser |
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| anamnesis | (noun) the ability to recall past occurrences | Synonyms: recollection, remembrance |
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| (noun) the case history of a medical patient as recalled by the patient | Synonyms: medical history, medical record |
| anamorphism | (noun) a distorted projection or perspective; especially an image distorted in such a way that it becomes visible only when viewed in a special manner | Synonyms: anamorphosis |
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| (noun) metamorphism that occurs deep under the earth's surface; changes simple minerals into complex minerals | - |
| (noun) the evolution of one type of organism from another by a long series of gradual changes | Synonyms: anamorphosis |
| anamorphosis | (noun) a distorted projection or perspective; especially an image distorted in such a way that it becomes visible only when viewed in a special manner | Synonyms: anamorphism |
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| (noun) the evolution of one type of organism from another by a long series of gradual changes | Synonyms: anamorphism |
| ananas | (noun) large sweet fleshy tropical fruit with a terminal tuft of stiff leaves; widely cultivated | Synonyms: pineapple |
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| anancasm | (noun) An obsolete term for ritualistic act or sequence of acts performed by a person with obsessive-compulsive neurosis. | - |
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| anapaest | (noun) a metrical unit with unstressed-unstressed-stressed syllables | Synonyms: anapest |
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| anapest | (noun) a metrical unit with unstressed-unstressed-stressed syllables | Synonyms: anapaest |
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| anaphase | (noun) the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle | - |
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| anaphor | (noun) a word (such as a pronoun) used to avoid repetition; the referent of an anaphor is determined by its antecedent | - |
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| anaphora | (noun) using a pronoun or similar word instead of repeating a word used earlier | - |
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| (noun) repetition of a word or phrase at the beginning of successive clauses | Synonyms: epanaphora |
| anaphrodisia | (noun) decline or absence of sexual desire | - |
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| anaphylaxis | (noun) hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance | - |
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| anaplasia | (noun) loss of structural differentiation within a cell or group of cells often with increased capacity for multiplication, as in a malignant tumor | - |
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| anaplasmosis | (noun) a disease of cattle that is transmitted by cattle ticks; similar to Texas fever | - |
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| anaplasty | (noun) surgery concerned with therapeutic or cosmetic reformation of tissue | Synonyms: plastic surgery, reconstructive surgery |
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| anapsid | (noun) primitive reptile having no opening in the temporal region of the skull; all extinct except turtles | Synonyms: anapsid reptile |
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| anarchism | (noun) a political theory favoring the abolition of governments | - |
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| anarchist | (noun) an advocate of anarchism | Synonyms: nihilist, syndicalist |
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| anarchy | (noun) a state of lawlessness and disorder (usually resulting from a failure of government) | Synonyms: lawlessness |
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| anarthria | (noun) partial or total loss of articulate speech resulting from lesions of the central nervous system | - |
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| anasarca | (noun) generalized edema with accumulation of serum in subcutaneous connective tissue | - |
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| anaspid | (noun) extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian | - |
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