| abdicate | (verb) give up, such as power, as of monarchs and emperors, or duties and obligations | Synonyms: renounce |
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| abdication | (noun) a formal resignation and renunciation of powers | Synonyms: stepping down |
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| (noun) the act of abdicating | Synonyms: stepping down |
| abdicator | (noun) one who formally relinquishes an office or responsibility | - |
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| acatalectic | (adjective) (verse) metrically complete; especially having the full number of syllables in the final metrical foot | - |
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| (noun) (prosody) a line of verse that has the full number of syllables | - |
| acataphasia | (noun) a disorder in which a lesion to the central nervous system leaves you unable to formulate a statement or to express yourself in an organized manner | - |
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| acathexia | (noun) an inability to retain bodily secretions | - |
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| acathexis | (noun) (psychoanalysis) a lack of cathexis; a condition in which significant objects or memories arouse no emotion in an individual | - |
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| acciaccatura | (noun) an embellishing note usually written in smaller size | Synonyms: appoggiatura, grace note |
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| acidification | (noun) the process of becoming acid or being converted into an acid | - |
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| adjudicate | (verb) bring to an end; settle conclusively | Synonyms: decide, resolve, settle |
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| (verb) put on trial or hear a case and sit as the judge at the trial of | Synonyms: judge, try |
| adjudication | (noun) the final judgment in a legal proceeding; the act of pronouncing judgment based on the evidence presented | - |
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| adjudicative | (adjective) concerned with adjudicating | Synonyms: adjudicatory |
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| adjudicator | (noun) a person who studies and settles conflicts and disputes | - |
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| adjudicatory | (adjective) concerned with adjudicating | Synonyms: adjudicative |
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| advocate | (noun) a person who pleads for a cause or propounds an idea | Synonyms: advocator, exponent, proponent |
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| (noun) a lawyer who pleads cases in court | Synonyms: counsel, counsellor, counselor-at-law, counselor, pleader |
| (verb) push for something | Synonyms: recommend, urge |
| (verb) speak, plead, or argue in favor of | Synonyms: preach |
| advocator | (noun) a person who pleads for a cause or propounds an idea | Synonyms: advocate, exponent, proponent |
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| affricate | (noun) a composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy') | Synonyms: affricate consonant, affricative |
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| affrication | (noun) the conversion of a simple stop consonant into an affricate | - |
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| affricative | (noun) a composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy') | Synonyms: affricate, affricate consonant |
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| aguacate | (noun) a pear-shaped tropical fruit with green or blackish skin and rich yellowish pulp enclosing a single large seed | Synonyms: alligator pear, avocado, avocado pear |
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| allocatable | (adjective) capable of being distributed | Synonyms: allocable, apportionable |
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| allocate | (verb) distribute according to a plan or set apart for a special purpose | Synonyms: apportion |
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| allocation | (noun) the act of distributing by allotting or apportioning; distribution according to a plan | Synonyms: allotment, apportioning, apportionment, assignation, parceling, parcelling |
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| (noun) (computer science) the assignment of particular areas of a magnetic disk to particular data or instructions | Synonyms: storage allocation |
| (noun) a share set aside for a specific purpose | Synonyms: allotment |
| allocator | (noun) a person with authority to allot or deal out or apportion | Synonyms: distributor |
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| altercate | (verb) have a disagreement over something | Synonyms: argufy, dispute, quarrel, scrap |
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| altercation | (noun) noisy quarrel | Synonyms: affray, fracas |
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| ammonification | (noun) impregnation with ammonia or a compound of ammonia | - |
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| amplification | (noun) (electronics) the act of increasing voltage or power or current | - |
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| (noun) addition of extra material or illustration or clarifying detail | Synonyms: elaboration |
| (noun) the amount of increase in signal power or voltage or current expressed as the ratio of output to input | Synonyms: gain |
| anticatalyst | (noun) (chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst | - |
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| application | (noun) the action of putting something into operation | - |
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| (noun) a diligent effort | Synonyms: diligence |
| (noun) the act of bringing something to bear; using it for a particular purpose | Synonyms: practical application |
| (noun) the work of applying something | Synonyms: coating, covering |
| (noun) liquid preparation having a soothing or antiseptic or medicinal action when applied to the skin | Synonyms: lotion |
| (noun) a verbal or written request for assistance or employment or admission to a school | - |
| (noun) a program that gives a computer instructions that provide the user with tools to accomplish a task | Synonyms: application program, applications programme |
| applicative | (adjective) readily applicable or practical | Synonyms: applicatory |
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| applicator | (noun) a device for applying a substance | Synonyms: applier |
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| applicatory | (adjective) readily applicable or practical | Synonyms: applicative |
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| auspicate | (verb) commence in a manner calculated to bring good luck | - |
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| (verb) indicate, as with a sign or an omen | Synonyms: augur, betoken, bode, forecast, foreshadow, foretell, omen, portend, predict, prefigure, presage, prognosticate |
| authenticate | (verb) establish the authenticity of something | - |
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| authenticated | (adjective) established as genuine | Synonyms: attested, documented |
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| authentication | (noun) validating the authenticity of something or someone | Synonyms: certification |
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| (noun) a mark on an article of trade to indicate its origin and authenticity | Synonyms: assay-mark, hallmark |
| authenticator | (noun) one who determines authenticity (as of works of art) or who guarantees validity | Synonyms: appraiser |
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| autocatalysis | (noun) catalysis in which the catalyst is one of the products of the reaction | - |
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| autocatalytic | (adjective) relating to or proceeding by autocatalysis | - |
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| avocation | (noun) an auxiliary activity | Synonyms: by-line, hobby, pursuit, sideline, spare-time activity |
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| avocational | (adjective) of or involved in an avocation | - |
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| baccate | (adjective) resembling a berry | Synonyms: berrylike |
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| (adjective) producing or bearing berries | Synonyms: bacciferous, berried |
| backscatter | (verb) scatter (radiation) by the atoms of the medium through which it passes | - |
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| bearcat | (noun) arboreal civet of Asia having a long prehensile tail and shaggy black hair | Synonyms: Arctictis bintourong, binturong |
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| beatification | (noun) (Roman Catholic Church) an act of the Pope who declares that a deceased person lived a holy life and is worthy of public veneration; a first step toward canonization | - |
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| (noun) the action of rendering supremely blessed and extremely happy | - |
| (noun) a state of supreme happiness | Synonyms: beatitude, blessedness |
| beautification | (noun) the act of making something more beautiful | - |
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| bifurcate | (adjective) resembling a fork; divided or separated into two branches | Synonyms: biramous, branched, forficate, fork-like, forked, pronged, prongy |
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| (verb) divide into two branches | - |
| (verb) split or divide into two | - |
| bifurcated | (adjective) divided into or made up of two parts | - |
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| bifurcation | (noun) the act of splitting into two branches | - |
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| (noun) the place where something divides into two branches | - |
| (noun) a bifurcating branch (one or both of them) | - |
| bilocation | (noun) the ability (said of certain Roman Catholic saints) to exist simultaneously in two locations | - |
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| biocatalyst | (noun) a biochemical catalyst such as an enzyme | - |
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| biocatalytic | (adjective) of or relating to biocatalysts | - |
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| bisulcate | (adjective) (used of hooves) split, divided | Synonyms: cloven |
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| bobcat | (noun) small lynx of North America | Synonyms: bay lynx, Lynx rufus |
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| borosilicate | (noun) a salt of boric and silicic acids | - |
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| bycatch | (noun) unwanted marine creatures that are caught in the nets while fishing for another species | Synonyms: by-catch |
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| calcification | (noun) a process that impregnates something with calcium (or calcium salts) | - |
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| (noun) tissue hardened by deposition of lime salts | - |
| (noun) an inflexible and unchanging state | - |
| caricature | (noun) a representation of a person that is exaggerated for comic effect | Synonyms: imitation, impersonation |
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| (verb) represent in or produce a caricature of | Synonyms: ape |
| caricaturist | (noun) someone who parodies in an exaggerated manner | - |
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| cartilaginification | (noun) abnormal formation of cartilage from other tissues; observed in some Asians | - |
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| cat | (noun) feline mammal usually having thick soft fur and no ability to roar: domestic cats; wildcats | Synonyms: true cat |
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| (noun) any of several large cats typically able to roar and living in the wild | Synonyms: big cat |
| (noun) a whip with nine knotted cords | Synonyms: cat-o'-nine-tails |
| (noun) a large tracked vehicle that is propelled by two endless metal belts; frequently used for moving earth in construction and farm work | Synonyms: Caterpillar |
| (noun) the leaves of the shrub Catha edulis which are chewed like tobacco or used to make tea; has the effect of a euphoric stimulant | Synonyms: African tea, Arabian tea, kat, khat, qat, quat |
| (noun) a spiteful woman gossip | - |
| (noun) an informal term for a youth or man | Synonyms: bozo, guy, hombre, sod |
| (verb) eject the contents of the stomach through the mouth | Synonyms: barf, be sick, cast, chuck, disgorge, honk, puke, purge, regorge, regurgitate, retch, sick, spew, spue, throw up, upchuck, vomit, vomit up |
| (verb) beat with a cat-o'-nine-tails | - |
| catabatic | (adjective) of an air current or wind; moving downward or down a slope because of cooling especially at night | Synonyms: katabatic |
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| catabiosis | (noun) normal aging of cells | - |
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| catabolic | (adjective) characterized by destructive metabolism | Synonyms: katabolic |
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| (adjective) relating to or characterized by catabolism | Synonyms: katabolic |
| catabolise | (verb) subject to catabolism | Synonyms: catabolize |
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| catabolism | (noun) breakdown in living organisms of more complex substances into simpler ones together with release of energy | Synonyms: destructive metabolism, dissimilation, katabolism |
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| catabolize | (verb) subject to catabolism | Synonyms: catabolise |
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| catacaustic | (noun) a caustic curve formed by light reflecting from a curved surface. | - |
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| catachresis | (noun) strained or paradoxical use of words either in error (as `blatant' to mean `flagrant') or deliberately (as in a mixed metaphor: `blind mouths') | - |
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| catachrestic | (adjective) constituting or characterized by or given to catachresis | Synonyms: catachrestical |
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| catachrestical | (adjective) constituting or characterized by or given to catachresis | Synonyms: catachrestic |
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| cataclinal | (adjective) of valleys and rivers; running in the direction of the dip in surrounding rock strata | - |
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| cataclysm | (noun) an event resulting in great loss and misfortune | Synonyms: calamity, catastrophe, disaster, tragedy |
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| (noun) a sudden violent change in the earth's surface | Synonyms: catastrophe |
| cataclysmal | (adjective) severely destructive | Synonyms: cataclysmic |
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| cataclysmic | (adjective) severely destructive | Synonyms: cataclysmal |
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| catacomb | (noun) an underground tunnel with recesses where bodies were buried (as in ancient Rome) | - |
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| catacorner | (adjective) slanted across a polygon on a diagonal line | Synonyms: cata-cornered, cater-cornered, catercorner, catty-corner, catty-cornered, kitty-corner, kitty-cornered |
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| catadromous | (adjective) migrating from fresh water to the sea to spawn | - |
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| catafalque | (noun) a decorated bier on which a coffin rests in state during a funeral | - |
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| catalase | (noun) enzyme found in most plant and animal cells that functions as an oxidative catalyst; decomposes hydrogen peroxide into oxygen and water | - |
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| catalatic | (adjective) of or relating to the enzyme catalase | - |
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| catalectic | (adjective) (verse) metrically incomplete; especially lacking one or more syllables in the final metrical foot | - |
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| (noun) (prosody) a line of verse that lacks a syllable in the last metrical foot | - |
| 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 | - |
| catalexis | (noun) the absence of a syllable in the last foot of a line or verse | - |
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| catalog | (noun) a book or pamphlet containing an enumeration of things | Synonyms: catalogue |
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| (noun) a complete list of things; usually arranged systematically | Synonyms: catalogue |
| (verb) make an itemized list or catalog of; classify | Synonyms: catalogue |
| (verb) make a catalogue, compile a catalogue | Synonyms: catalogue |
| cataloger | (noun) a librarian who classifies publications according to a categorial system | Synonyms: cataloguer |
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| catalogue | (noun) a book or pamphlet containing an enumeration of things | Synonyms: catalog |
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| (noun) a complete list of things; usually arranged systematically | Synonyms: catalog |
| (verb) make an itemized list or catalog of; classify | Synonyms: catalog |
| (verb) make a catalogue, compile a catalogue | Synonyms: catalog |
| cataloguer | (noun) a librarian who classifies publications according to a categorial system | Synonyms: cataloger |
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| catalpa | (noun) tree of the genus Catalpa with large leaves and white flowers followed by long slender pods | Synonyms: Indian bean |
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| catalufa | (noun) brightly colored carnivorous fish of western Atlantic and West Indies waters | Synonyms: Priacanthus arenatus |
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| catalyse | (verb) change by catalysis or cause to catalyze | Synonyms: catalyze |
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| catalysis | (noun) acceleration of a chemical reaction induced by the presence of material that is chemically unchanged at the end of the reaction | Synonyms: contact action |
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| catalyst | (noun) something that causes an important event to happen | - |
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| (noun) (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected | Synonyms: accelerator |
| catalytic | (adjective) relating to or causing or involving catalysis | - |
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| catalytically | (adverb) by catalytic action; in a catalytic manner | - |
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| catalyze | (verb) change by catalysis or cause to catalyze | Synonyms: catalyse |
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| catamaran | (noun) a boat with two parallel hulls held together by single deck | - |
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| catamenia | (noun) the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause | Synonyms: flow, menses, menstruation, menstruum, period |
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