| counteraction | (noun) action intended to nullify the effects of some previous action | Synonyms: neutralisation, neutralization |
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| counterattraction | (noun) a rival attraction | - |
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| counterdemonstration | (noun) a demonstration held in opposition to another demonstration | - |
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| counterreformation | (noun) a reformation intended to counter the results of a prior reformation | - |
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| counterrevolution | (noun) a revolution whose aim is to reverse the changes introduced by a previous revolution | - |
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| covariation | (noun) (statistics) correlated variation | - |
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| creation | (noun) the human act of creating | Synonyms: creative activity |
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| (noun) the act of starting something for the first time; introducing something new | Synonyms: foundation, founding, initiation, innovation, instauration, institution, introduction, origination |
| (noun) an artifact that has been brought into existence by someone | - |
| (noun) the event that occurred at the beginning of something | Synonyms: conception |
| (noun) everything that exists anywhere | Synonyms: cosmos, existence, macrocosm, universe, world |
| cremation | (noun) the incineration of a dead body | - |
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| crenation | (noun) one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.) | Synonyms: crenature, crenel, crenelle, scallop |
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| crenelation | (noun) the action of constructing ramparts with gaps for firing guns or arrows | Synonyms: crenellation |
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| (noun) a rampart built around the top of a castle with regular gaps for firing arrows or guns | Synonyms: battlement, crenellation |
| crenellation | (noun) the action of constructing ramparts with gaps for firing guns or arrows | Synonyms: crenelation |
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| (noun) a rampart built around the top of a castle with regular gaps for firing arrows or guns | Synonyms: battlement, crenelation |
| crepitation | (noun) the sharp sound of snapping noises | Synonyms: crackle, crackling |
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| criminalisation | (noun) legislation that makes something illegal | Synonyms: criminalization |
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| criminalization | (noun) legislation that makes something illegal | Synonyms: criminalisation |
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| crystallisation | (noun) the formation of crystals | Synonyms: crystallization, crystallizing |
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| crystallization | (noun) a mental synthesis that becomes fixed or concrete by a process resembling crystal formation | - |
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| (noun) a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces | Synonyms: crystal |
| (noun) the formation of crystals | Synonyms: crystallisation, crystallizing |
| culmination | (noun) a concluding action | Synonyms: closing, completion, mop up, windup |
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| (noun) the decisive moment in a novel or play | Synonyms: climax |
| (noun) (astronomy) a heavenly body's highest celestial point above an observer's horizon | - |
| (noun) a final climactic stage | Synonyms: apogee |
| cultivation | (noun) (agriculture) production of food by preparing the land to grow crops (especially on a large scale) | - |
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| (noun) socialization through training and education to develop one's mind or manners | - |
| (noun) the act of raising or growing plants (especially on a large scale) | - |
| (noun) the process of fostering the growth of something | - |
| (noun) a highly developed state of perfection; having a flawless or impeccable quality | Synonyms: culture, finish, polish, refinement |
| cumulation | (noun) a collection of objects laid on top of each other | Synonyms: agglomerate, cumulus, heap, mound, pile |
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| cunctation | (noun) the act of procrastinating; putting off or delaying or deferring an action to a later time | Synonyms: procrastination, shillyshally |
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| cuspidation | (noun) a decoration using cusps | - |
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| cybernation | (noun) the control of processes by computer | Synonyms: computerization |
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| damnation | (noun) the act of damning | - |
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| (noun) the state of being condemned to eternal punishment in Hell | Synonyms: eternal damnation |
| deactivation | (noun) the act of deactivating or making ineffective (as a bomb) | Synonyms: defusing |
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| (noun) breaking up a military unit (by transfers or discharges) | Synonyms: inactivation |
| deamination | (noun) removal of the amino radical from an amino acid or other amino compound | Synonyms: deaminization |
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| deaminization | (noun) removal of the amino radical from an amino acid or other amino compound | Synonyms: deamination |
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| debarkation | (noun) the act of passengers and crew getting off of a ship or aircraft | Synonyms: disembarkation, disembarkment |
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| debilitation | (noun) serious weakening and loss of energy | Synonyms: enervation, enfeeblement, exhaustion |
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| decalcification | (noun) loss of calcium from bones or teeth | - |
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| decantation | (noun) the act of gently pouring off a clear liquor (as from its original bottle) without disturbing the lees | - |
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| decapitation | (noun) killing by cutting off the head | Synonyms: beheading |
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| (noun) execution by cutting off the victim's head | Synonyms: beheading |
| decarboxylation | (noun) the process of removing a carboxyl group from a chemical compound (usually replacing it with hydrogen) | - |
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| deceleration | (noun) the act of decelerating; decreasing the speed | - |
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| (noun) a decrease in rate of change | Synonyms: retardation, slowing |
| (noun) (physics) a rate of decrease in velocity | - |
| decentalisation | (noun) the social process in which population and industry moves from urban centers to outlying districts | Synonyms: decentralization |
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| decentralisation | (noun) the spread of power away from the center to local branches or governments | Synonyms: decentralization |
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| decentralization | (noun) the spread of power away from the center to local branches or governments | Synonyms: decentralisation |
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| (noun) the social process in which population and industry moves from urban centers to outlying districts | Synonyms: decentalisation |
| decentration | (noun) Jean Piaget's theory of cognitive development where a child slowly moves away from an egocentric world to a world shared with others. | Synonyms: decentering |
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| deception | (noun) the act of deceiving | Synonyms: deceit, dissembling, dissimulation |
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| (noun) an illusory feat; considered magical by naive observers | Synonyms: conjuration, conjuring trick, illusion, legerdemain, magic, magic trick, thaumaturgy, trick |
| (noun) a misleading falsehood | Synonyms: deceit, misrepresentation |
| decimalisation | (noun) the act of changing to a decimal system | Synonyms: decimalization |
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| decimalization | (noun) the act of changing to a decimal system | Synonyms: decimalisation |
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| decimation | (noun) destroying or killing a large part of the population | - |
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| declamation | (noun) vehement oratory | - |
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| (noun) recitation of a speech from memory with studied gestures and intonation as an exercise in elocution or rhetoric | - |
| declaration | (noun) a statement that is emphatic and explicit (spoken or written) | - |
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| (noun) a formal expression by a meeting; agreed to by a vote | Synonyms: resolution, resolve |
| (noun) (law) unsworn statement that can be admitted in evidence in a legal transaction | - |
| (noun) a formal public statement | Synonyms: announcement, annunciation, proclamation |
| (noun) (contract bridge) the highest bid becomes the contract setting the number of tricks that the bidder must make | Synonyms: contract |
| (noun) a statement of taxable goods or of dutiable properties | - |
| declassification | (noun) reduction or removal by the government of restrictions on a classified document or weapon | - |
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| declination | (noun) a polite refusal of an invitation | Synonyms: regrets |
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| (noun) (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere | Synonyms: celestial latitude, dec |
| (noun) a downward slope or bend | Synonyms: declension, decline, declivity, descent, downslope, fall |
| (noun) a condition inferior to an earlier condition; a gradual falling off from a better state; decline | Synonyms: decline |
| decoction | (noun) (pharmacology) the extraction of water-soluble drug substances by boiling | - |
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| decolonisation | (noun) the action of changing from colonial to independent status | Synonyms: decolonization |
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| decolonization | (noun) the action of changing from colonial to independent status | Synonyms: decolonisation |
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| decomposition | (noun) the analysis of a vector field | Synonyms: vector decomposition |
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| (noun) the organic phenomenon of rotting | Synonyms: decay |
| (noun) (biology) the process of decay caused by bacterial or fungal action | Synonyms: breakdown, putrefaction, rot, rotting |
| (noun) (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance | Synonyms: breakdown, chemical decomposition reaction, decomposition reaction |
| (noun) in a decomposed state | Synonyms: disintegration |
| deconstruction | (noun) a philosophical theory of criticism (usually of literature or film) that seeks to expose deep-seated contradictions in a work by delving below its surface meaning | Synonyms: deconstructionism |
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| decontamination | (noun) the removal of contaminants | - |
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| decoration | (noun) the act of decorating something (in the hope of making it more attractive) | - |
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| (noun) something used to beautify | Synonyms: ornament, ornamentation |
| (noun) an award for winning a championship or commemorating some other event | Synonyms: laurel wreath, medal, medallion, palm, ribbon |
| decortication | (noun) removal of the outer covering of an organ or part | - |
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| decrementation | (noun) the operation of subtracting one from the operand. | - |
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| decrepitation | (noun) the crackling or breaking up of certain crystals when they are heated | - |
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| decriminalisation | (noun) legislation that makes something legal that was formerly illegal | Synonyms: decriminalization |
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| decriminalization | (noun) legislation that makes something legal that was formerly illegal | Synonyms: decriminalisation |
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| decryption | (noun) the activity of making clear or converting from code into plain text | Synonyms: decipherment, decoding |
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| decussation | (noun) an intersection or crossing of two tracts in the form of the letter X | Synonyms: chiasm, chiasma |
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| dedication | (noun) the act of binding yourself (intellectually or emotionally) to a course of action | Synonyms: allegiance, commitment, loyalty |
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| (noun) complete and wholehearted fidelity | - |
| (noun) a short message (as in a book or musical work or on a photograph) dedicating it to someone or something | Synonyms: inscription |
| (noun) a message that makes a pledge | Synonyms: commitment |
| (noun) a ceremony in which something (as a building) is dedicated to some goal or purpose | - |
| dedifferentiation | (noun) the loss of specialization in form or function | - |
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| deduction | (noun) the act of subtracting (removing a part from the whole) | Synonyms: subtraction |
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| (noun) the act of reducing the selling price of merchandise | Synonyms: discount, price reduction |
| (noun) reasoning from the general to the particular (or from cause to effect) | Synonyms: deductive reasoning, synthesis |
| (noun) something that is inferred (deduced or entailed or implied) | Synonyms: entailment, implication |
| (noun) an amount or percentage deducted | Synonyms: discount |
| (noun) a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer's income bracket | Synonyms: tax deduction, tax write-off |
| defalcation | (noun) the fraudulent appropriation of funds or property entrusted to your care but actually owned by someone else | Synonyms: embezzlement, misapplication, misappropriation, peculation |
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| (noun) the sum of money that is misappropriated | - |
| defamation | (noun) an abusive attack on a person's character or good name | Synonyms: aspersion, calumny, denigration, slander |
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| (noun) a false accusation of an offense or a malicious misrepresentation of someone's words or actions | Synonyms: calumniation, calumny, hatchet job, obloquy, traducement |
| defecation | (noun) the elimination of fecal waste through the anus | Synonyms: laxation, shitting |
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| defection | (noun) withdrawing support or help despite allegiance or responsibility | Synonyms: abandonment, desertion |
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| (noun) the state of having rejected your religious beliefs for your political party or a cause (often in favor of opposing beliefs or causes) | Synonyms: apostasy, renunciation |
| defenestration | (noun) the act of throwing someone or something out of a window | - |
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| defibrillation | (noun) treatment by stopping fibrillation of heart muscles (usually by electric shock delivered by a defibrillator) | - |
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| definition | (noun) clarity of outline | - |
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| (noun) a concise explanation of the meaning of a word or phrase or symbol | - |
| deflagration | (noun) combustion that propagates through a gas or along the surface of an explosive at a rapid rate driven by the transfer of heat | - |
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| deflation | (noun) the act of letting the air out of something | - |
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| (noun) a contraction of economic activity resulting in a decline of prices | - |
| (noun) (geology) the erosion of soil as a consequence of sand and dust and loose rocks being removed by the wind | - |
| deflection | (noun) a turning aside (of your course or attention or concern) | Synonyms: deflexion, deviation, digression, divagation, diversion |
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| (noun) the property of being bent or deflected | Synonyms: bending, deflexion |
| (noun) the amount by which a propagating wave is bent | Synonyms: deflexion, refraction |
| (noun) the movement of the pointer or pen of a measuring instrument from its zero position | Synonyms: deflexion |
| (noun) a twist or aberration; especially a perverse or abnormal way of judging or acting | Synonyms: warp |
| defloration | (noun) the act of depriving a woman of her virginity (especially by rupturing the hymen through sexual intercourse) | - |
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| (noun) an act that despoils the innocence or beauty of something | - |
| defoliation | (noun) causing the leaves of trees and other plants to fall off (as by the use of chemicals) | - |
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| (noun) the loss of foliage | - |
| deforestation | (noun) the removal of trees | Synonyms: disforestation |
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| (noun) the state of being clear of trees | - |
| deformation | (noun) the act of twisting or deforming the shape of something (e.g., yourself) | Synonyms: contortion |
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| (noun) a change for the worse | Synonyms: distortion |
| (noun) alteration in the shape or dimensions of an object as a result of the application of stress to it | - |
| degeneration | (noun) passing from a more complex to a simpler biological form | Synonyms: retrogression |
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| (noun) the process of declining from a higher to a lower level of effective power or vitality or essential quality | Synonyms: devolution |
| (noun) the state of being degenerate in mental or moral qualities | Synonyms: decadence, decadency, degeneracy |
| deglutition | (noun) the act of swallowing | Synonyms: drink, swallow |
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| degradation | (noun) changing to a lower state (a less respected state) | Synonyms: debasement |
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| (noun) a low or downcast state | Synonyms: abasement, abjection |
| degustation | (noun) taking a small amount into the mouth to test its quality | Synonyms: relishing, savoring, savouring, tasting |
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| dehumanisation | (noun) the act of degrading people with respect to their best qualities | Synonyms: dehumanization |
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| dehumanization | (noun) the act of degrading people with respect to their best qualities | Synonyms: dehumanisation |
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| dehydration | (noun) the process of extracting moisture | Synonyms: desiccation, drying up, evaporation |
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| (noun) dryness resulting from the removal of water | Synonyms: desiccation |
| (noun) depletion of bodily fluids | - |
| deification | (noun) the elevation of a person (as to the status of a god) | Synonyms: apotheosis, exaltation |
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| (noun) an embodiment of the qualities of a god | - |
| (noun) the condition of being treated like a god | - |
| dejection | (noun) a state of melancholy depression | - |
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| (noun) solid excretory product evacuated from the bowels | Synonyms: BM, faecal matter, faeces, fecal matter, feces, ordure, stool |
| delabialization | (noun) the pronouncing of a sound without lip rounding. | - |
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| delectation | (noun) act of receiving pleasure from something | Synonyms: enjoyment |
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| (noun) a feeling of extreme pleasure or satisfaction | Synonyms: delight |
| delegation | (noun) authorizing subordinates to make certain decisions | Synonyms: delegating, deputation, relegating, relegation |
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| (noun) a group of representatives or delegates | Synonyms: commission, delegacy, deputation, mission |
| deletion | (noun) the act of deleting something written or printed | - |
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| (noun) the omission that is made when an editorial change shortens a written passage | Synonyms: cut, excision |
| (noun) (genetics) the loss or absence of one or more nucleotides from a chromosome | - |
| (noun) any process whereby sounds or words are left out of spoken words or phrases | Synonyms: omission |
| deliberation | (noun) the trait of thoughtfulness in action or decision | Synonyms: deliberateness |
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| (noun) a rate demonstrating an absence of haste or hurry | Synonyms: deliberateness, slowness, unhurriedness |
| (noun) planning something carefully and intentionally | Synonyms: calculation |
| (noun) careful consideration | Synonyms: advisement, weighing |
| (noun) (usually plural) discussion of all sides of a question | - |
| delimitation | (noun) a line that indicates a boundary | Synonyms: border, borderline, boundary line, mete |
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| delineation | (noun) representation by drawing or painting etc | Synonyms: depiction, portrayal |
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| (noun) a drawing of the outlines of forms or objects | Synonyms: depiction, limning, line drawing |
| (noun) a graphic or vivid verbal description | Synonyms: characterisation, characterization, depiction, picture, word-painting, word picture |
| demagnetisation | (noun) the process of removing magnetization | Synonyms: demagnetization |
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| demagnetization | (noun) the process of removing magnetization | Synonyms: demagnetisation |
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| demarcation | (noun) a conceptual separation or distinction | Synonyms: contrast, dividing line, line |
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| (noun) the boundary of a specific area | Synonyms: demarcation line, limit |
| demineralisation | (noun) the removal of minerals and mineral salts from a liquid (especially from water) | Synonyms: demineralization |
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| (noun) abnormal loss of mineral salts (especially from bone) | Synonyms: demineralization |
| demineralization | (noun) the removal of minerals and mineral salts from a liquid (especially from water) | Synonyms: demineralisation |
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| (noun) abnormal loss of mineral salts (especially from bone) | Synonyms: demineralisation |
| demobilisation | (noun) act of changing from a war basis to a peace basis including disbanding or discharging troops | Synonyms: demobilization |
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| demobilization | (noun) act of changing from a war basis to a peace basis including disbanding or discharging troops | Synonyms: demobilisation |
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| democratisation | (noun) the action of making something democratic | Synonyms: democratization |
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