| coronavirus | (noun) a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020 | Synonyms: 2019-nCoV acute respiratory disease, corona, coronavirus disease 2019, COVID-19, novel coronavirus pneumonia, Wuhan coronavirus, Wuhan flu, Wuhan pneumonia, Wuhan virus |
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| cortina | (noun) a cobwebby partial veil consisting of silky fibrils | - |
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| cosignatory | (noun) one of two or more signers of the same document (as a treaty or declaration) | Synonyms: cosigner |
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| cosmonaut | (noun) a person trained to travel in a spacecraft | Synonyms: astronaut, spaceman |
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| cotenant | (noun) one of two or more tenants holding title to the same property | - |
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| countenance | (noun) the appearance conveyed by a person's face | Synonyms: visage |
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| (noun) the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British) | Synonyms: kisser, mug, phiz, physiognomy, smiler, visage |
| (noun) formal and explicit approval | Synonyms: endorsement, imprimatur, indorsement, sanction, warrant |
| counterespionage | (noun) spying on the spies | - |
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| counterrevolutionary | (noun) a revolutionary whose aim is to reverse the changes introduced by an earlier revolution | Synonyms: counter-revolutionist, counterrevolutionist |
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| countersignature | (noun) a second confirming signature endorsing a document already signed | Synonyms: countersign |
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| covenant | (noun) a signed written agreement between two or more parties (nations) to perform some action | Synonyms: compact, concordat |
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| (noun) (Bible) an agreement between God and his people in which God makes certain promises and requires certain behavior from them in return | - |
| cozenage | (noun) a fraudulent business scheme | Synonyms: scam |
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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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| crenature | (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: crenation, crenel, crenelle, scallop |
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| criminal | (noun) someone who has committed a crime or has been legally convicted of a crime | Synonyms: crook, felon, malefactor, outlaw |
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| criminalisation | (noun) legislation that makes something illegal | Synonyms: criminalization |
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| criminalism | (noun) the state of being a criminal | Synonyms: criminality, criminalness |
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| criminality | (noun) the state of being a criminal | Synonyms: criminalism, criminalness |
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| criminalization | (noun) legislation that makes something illegal | Synonyms: criminalisation |
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| criminalness | (noun) the state of being a criminal | Synonyms: criminalism, criminality |
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| cryoanaesthesia | (noun) insensibility resulting from cold | Synonyms: cryoanesthesia |
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| cryptanalysis | (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalytics, cryptography, cryptology |
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| cryptanalyst | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptographer, cryptologist |
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| cryptanalytics | (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalysis, cryptography, cryptology |
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| cryptomonad | (noun) common in fresh and salt water appearing along the shore as algal blooms | Synonyms: cryptophyte |
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| 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 |
| cyanamid | (noun) a weak soluble dibasic acid (the parent acid of cyanamide salts) | Synonyms: cyanamide |
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| cyanamide | (noun) a weak soluble dibasic acid (the parent acid of cyanamide salts) | Synonyms: cyanamid |
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| (noun) a compound used as a fertilizer and as a source of nitrogen compounds | Synonyms: calcium-cyanamide |
| cybernation | (noun) the control of processes by computer | Synonyms: computerization |
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| cybernaut | (noun) a computer user who uses the internet; someone who explores cyberspace | - |
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| cyclooxygenase | (noun) either of two related enzymes that control the production of prostaglandins and are blocked by aspirin | Synonyms: Cox |
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| cynancum | (noun) any of various mostly giant tropical lianas of Africa and Madagascar having greenish or purple flowers and long smooth pods; roots formerly used as an emetic | - |
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| czarina | (noun) the wife or widow of a czar | Synonyms: czaritza, tsarina, tsaritsa, tzarina |
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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 |
| danaid | (noun) large tropical butterfly with degenerate forelegs and an unpleasant taste | Synonyms: danaid butterfly |
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| deamination | (noun) removal of the amino radical from an amino acid or other amino compound | Synonyms: deaminization |
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| decennary | (noun) a period of 10 years | Synonyms: decade, decennium |
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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 |
| decontamination | (noun) the removal of contaminants | - |
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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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| definability | (noun) the quality or state of being capable of being defined, limited, or explained. | - |
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| demyelination | (noun) loss of the myelin covering of some nerve fibers resulting in their impaired function | - |
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| denationalisation | (noun) changing something from state to private ownership or control | Synonyms: denationalization, privatisation, privatization |
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| denationalization | (noun) changing something from state to private ownership or control | Synonyms: denationalisation, privatisation, privatization |
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| denaturant | (noun) any substance that serves as a denaturing agent | - |
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| denazification | (noun) social process of removing Nazis from official positions and giving up any allegiance to Nazism | Synonyms: de-Nazification |
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| denomination | (noun) identifying word or words by which someone or something is called and classified or distinguished from others | Synonyms: appellation, appellative, designation |
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| (noun) a group of religious congregations having its own organization and a distinctive faith | - |
| (noun) a class of one kind of unit in a system of numbers or measures or weights or money | - |
| denominationalism | (noun) a narrow-minded adherence to a particular sect or party or denomination | Synonyms: sectarianism |
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| (noun) the tendency, in Protestantism, to separate into religious denominations or to advocate such separations | - |
| denominator | (noun) the divisor of a fraction | - |
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| depersonalisation | (noun) representing a human being as a physical thing deprived of personal qualities or individuality | Synonyms: depersonalization, reification |
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| (noun) emotional dissociative disorder in which there is loss of contact with your own personal reality accompanied by feelings of unreality and strangeness | Synonyms: depersonalisation disorder, depersonalisation neurosis, depersonalization, depersonalization disorder, depersonalization neurosis |
| (noun) (existentialism) a loss of personal identity; a feeling of being an anonymous cog in an impersonal social machine | Synonyms: depersonalization |
| depersonalization | (noun) representing a human being as a physical thing deprived of personal qualities or individuality | Synonyms: depersonalisation, reification |
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| (noun) emotional dissociative disorder in which there is loss of contact with your own personal reality accompanied by feelings of unreality and strangeness | Synonyms: depersonalisation, depersonalisation disorder, depersonalisation neurosis, depersonalization disorder, depersonalization neurosis |
| (noun) (existentialism) a loss of personal identity; a feeling of being an anonymous cog in an impersonal social machine | Synonyms: depersonalisation |
| deracination | (noun) the act of pulling up or out; uprooting; cutting off from existence | Synonyms: excision, extirpation |
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| (noun) to move something from its natural environment | Synonyms: displacement |
| desalination | (noun) the removal of salt (especially from sea water) | Synonyms: desalinisation, desalinization |
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| designation | (noun) the act of putting a person into a non-elective position | Synonyms: appointment, assignment, naming |
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| (noun) the act of designating or identifying something | Synonyms: identification |
| (noun) identifying word or words by which someone or something is called and classified or distinguished from others | Synonyms: appellation, appellative, denomination |
| designatum | (noun) something (whether existing or not) that is referred to by a linguistic expression | - |
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| destination | (noun) the ultimate goal for which something is done | Synonyms: terminus |
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| (noun) written directions for finding some location; written on letters or packages that are to be delivered to that location | Synonyms: address, name and address |
| (noun) the place designated as the end (as of a race or journey) | Synonyms: finish, goal |
| determinant | (noun) a determining or causal element or factor | Synonyms: causal factor, determinative, determiner, determining factor |
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| (noun) a square matrix used to solve simultaneous equations | - |
| (noun) the site on the surface of an antigen molecule to which an antibody attaches itself | Synonyms: antigenic determinant, epitope |
| determinateness | (noun) the quality of being predictable with great confidence | Synonyms: definiteness |
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| determination | (noun) the act of determining the properties of something, usually by research or calculation | Synonyms: finding |
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| (noun) the act of making up your mind about something | Synonyms: conclusion, decision |
| (noun) the quality of being determined to do or achieve something; firmness of purpose | Synonyms: purpose |
| (noun) a position or opinion or judgment reached after consideration | Synonyms: conclusion, decision |
| (noun) deciding or controlling something's outcome or nature | - |
| determinative | (noun) a determining or causal element or factor | Synonyms: causal factor, determinant, determiner, determining factor |
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| (noun) one of a limited class of noun modifiers that determine the referents of noun phrases | Synonyms: determiner |
| detonation | (noun) the act of detonating an explosive | - |
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| (noun) a violent release of energy caused by a chemical or nuclear reaction | Synonyms: blowup, explosion |
| detonator | (noun) a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive | Synonyms: cap, detonating device |
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| devotional | (noun) a short religious service | - |
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| diagonal | (noun) a punctuation mark (/) used to separate related items of information | Synonyms: separatrix, slash, solidus, stroke, virgule |
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| (noun) an oblique line of squares of the same color on a checkerboard | - |
| (noun) (mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry | - |
| (noun) a line or cut across a fabric that is not at right angles to a side of the fabric | Synonyms: bias |
| (noun) (geometry) a straight line connecting any two vertices of a polygon that are not adjacent | - |
| diagonalisation | (noun) changing a square matrix to diagonal form (with all non-zero elements on the principal diagonal) | Synonyms: diagonalization |
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| diagonalization | (noun) changing a square matrix to diagonal form (with all non-zero elements on the principal diagonal) | Synonyms: diagonalisation |
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| dictionary | (noun) a reference book containing an alphabetical list of words with information about them | Synonyms: lexicon |
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| dimenhydrinate | (noun) antihistamine and antiemetic (trade name Dramamine) used to treat motion sickness | Synonyms: Dramamine |
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| dimensionality | (noun) the spatial property of having dimensions | - |
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| dinar | (noun) the basic unit of money in Algeria | Synonyms: Algerian dinar |
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| (noun) the basic unit of money in Bahrain; equal to 1,000 fils | Synonyms: Bahrain dinar |
| (noun) the basic unit of money in Iraq; equal to 1,000 fils | Synonyms: Iraqi dinar |
| (noun) the basic unit of money in Jordan; equal to 1,000 fils | Synonyms: Jordanian dinar |
| (noun) the basic unit of money in Kuwait; equal 1,000 fils | Synonyms: Kuwaiti dinar |
| (noun) the basic unit of money in Libya | Synonyms: Libyan dinar |
| (noun) the basic unit of money in Tunisia | Synonyms: Tunisian dinar |
| (noun) the basic unit of money in Yugoslavia | Synonyms: Yugoslavian dinar |
| (noun) 100 dinars equal 1 rial in Iran | Synonyms: Iranian dinar |
| directionality | (noun) the property of a microphone or antenna of being more sensitive in one direction than in another | Synonyms: directivity |
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| (noun) the property of being directional or maintaining a direction | - |
| discernability | (noun) distinctness that makes perception easy | Synonyms: legibility |
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| discina | (noun) any fungus of the genus Discina | - |
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| disciplinarian | (noun) someone who demands exact conformity to rules and forms | Synonyms: martinet, moralist |
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| discrimination | (noun) unfair treatment of a person or group on the basis of prejudice | Synonyms: favoritism, favouritism |
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| (noun) the cognitive process whereby two or more stimuli are distinguished | Synonyms: secernment |
| discriminator | (noun) a person who (or that which) differentiates | Synonyms: differentiator |
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| disinclination | (noun) a certain degree of unwillingness | Synonyms: hesitancy, hesitation, indisposition, reluctance |
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| (noun) that toward which you are inclined to feel dislike | - |
| dispassionateness | (noun) objectivity and detachment | Synonyms: dispassion, dryness |
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| dissemination | (noun) the act of dispersing or diffusing something | Synonyms: diffusion, dispersal, dispersion |
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| (noun) the property of being diffused or dispersed | Synonyms: diffusion |
| (noun) the opening of a subject to widespread discussion and debate | Synonyms: airing, public exposure, spreading |
| disseminator | (noun) someone who spreads the news | Synonyms: propagator |
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| dissonance | (noun) disagreeable sounds | - |
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| (noun) the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience | Synonyms: noise, racket |
| (noun) a conflict of people's opinions or actions or characters | Synonyms: disagreement, dissension |
| divination | (noun) the art or gift of prophecy (or the pretense of prophecy) by supernatural means | Synonyms: foretelling, fortune telling, soothsaying |
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| (noun) a prediction uttered under divine inspiration | Synonyms: prophecy |
| (noun) successful conjecture by unusual insight or good luck | - |
| doctrinaire | (noun) a stubborn person of arbitrary or arrogant opinions | Synonyms: dogmatist |
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| dominance | (noun) the power or right to give orders or make decisions | Synonyms: authorisation, authority, authorization, potency, say-so |
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| (noun) superior development of one side of the body | Synonyms: laterality |
| (noun) the organic phenomenon in which one of a pair of alleles present in a genotype is expressed in the phenotype and the other allele of the pair is not | - |
| (noun) the state that exists when one person or group has power over another | Synonyms: ascendance, ascendancy, ascendence, ascendency, control |
| dominant | (noun) an allele that produces the same phenotype whether its paired allele is identical or different | Synonyms: dominant allele |
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| (noun) (music) the fifth note of the diatonic scale | - |
| domination | (noun) social control by dominating | - |
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| (noun) power to dominate or defeat | Synonyms: mastery, supremacy |
| dominatrix | (noun) a dominating woman (especially one who plays that role in a sadomasochistic sexual relationship) | - |
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| donation | (noun) act of giving in common with others for a common purpose especially to a charity | Synonyms: contribution |
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| (noun) a voluntary gift (as of money or service or ideas) made to some worthwhile cause | Synonyms: contribution |
| donna | (noun) an Italian woman of rank | - |
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| doornail | (noun) a nail with a large head; formerly used to decorate doors | - |
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| dracaena | (noun) an agave that is often cultivated for its decorative foliage | - |
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| drainage | (noun) emptying something accomplished by allowing liquid to run out of it | Synonyms: drain |
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| dreadnaught | (noun) battleship that has big guns all of the same caliber | Synonyms: dreadnought |
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| dronabinol | (noun) psychoactive substance present in marijuana; used therapeutically to control nausea associated with cancer therapy | - |
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| duenna | (noun) a woman chaperon | - |
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| dulciana | (noun) the organ stop having a tone of soft sweet string quality | - |
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| dynamic | (noun) an efficient incentive | Synonyms: moral force |
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| dynamics | (noun) the branch of mechanics concerned with the forces that cause motions of bodies | Synonyms: kinetics |
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| dynamism | (noun) the activeness of an energetic personality | Synonyms: oomph, pizzaz, pizzazz, zing |
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| (noun) active strength of body or mind | Synonyms: heartiness, vigor, vigour |
| (noun) any of the various theories or doctrines or philosophical systems that attempt to explain the phenomena of the universe in terms of some immanent force or energy | - |
| dynamite | (noun) an explosive containing nitrate sensitized with nitroglycerin absorbed on wood pulp | - |
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