| cyprinid | (adjective) of or relating to members of fish family Cyprinidae | Synonyms: cyprinoid |
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| (noun) soft-finned mainly freshwater fishes typically having toothless jaws and cycloid scales | Synonyms: cyprinid fish |
| cyprinoid | (adjective) of or relating to members of fish family Cyprinidae | Synonyms: cyprinid |
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| cytidine | (noun) a nucleoside component of DNA; composed of cytosine and deoxyribose | Synonyms: deoxycytidine |
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| dairymaid | (noun) a woman who works in a dairy | Synonyms: milkmaid |
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| daminozide | (noun) a chemical sprayed on fruit trees to regulate their growth so the entire crop can be harvested at one time | Synonyms: Alar |
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| danaid | (noun) large tropical butterfly with degenerate forelegs and an unpleasant taste | Synonyms: danaid butterfly |
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| dasyurid | (noun) small carnivorous nocturnal marsupials of Australia and Tasmania | Synonyms: dasyurid marsupial |
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| debridement | (noun) surgical removal of foreign material and dead tissue from a wound in order to prevent infection and promote healing | - |
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| decide | (verb) reach, make, or come to a decision about something | Synonyms: determine, make up one's mind |
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| (verb) bring to an end; settle conclusively | Synonyms: adjudicate, resolve, settle |
| (verb) cause to decide | - |
| (verb) influence or determine | - |
| decideable | (adjective) capable of being decided as following or not following from the axioms of a logical system | - |
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| decided | (adjective) recognizable; marked | Synonyms: distinct |
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| decidedly | (adverb) without question and beyond doubt | Synonyms: by all odds, definitely, emphatically, in spades, unquestionably |
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| deciding | (adjective) having the power or quality of deciding | Synonyms: determinant, determinative, determining |
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| (noun) the cognitive process of reaching a decision | Synonyms: decision making |
| decidua | (noun) the epithelial tissue of the endometrium | - |
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| deciduous | (adjective) (of plants and shrubs) shedding foliage at the end of the growing season | - |
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| (adjective) (of teeth, antlers, etc.) being shed at the end of a period of growth | - |
| dehumidifier | (noun) an appliance to extract moisture from the air and make the environment more comfortable | - |
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| dehumidify | (verb) make less humid | - |
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| deltoid | (adjective) triangular or suggesting a capital delta, with a point at the apex | - |
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| (noun) a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm | Synonyms: deltoid muscle, musculus deltoideus |
| demantoid | (noun) a green andradite used as a gemstone | - |
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| dendroid | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arborescent, arboresque, arboriform, dendriform, dendroidal, tree-shaped, treelike |
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| dendroidal | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arborescent, arboresque, arboriform, dendriform, dendroid, tree-shaped, treelike |
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| deoxidise | (verb) to remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons | Synonyms: deoxidize, reduce |
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| deoxidize | (verb) to remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons | Synonyms: deoxidise, reduce |
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| deoxycytidine | (noun) a nucleoside component of DNA; composed of cytosine and deoxyribose | Synonyms: cytidine |
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| deoxynucleotide | (noun) Any nucleotide that contains a deoxy sugar. | - |
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| deoxythymidine | (noun) a nucleoside component of DNA; composed of thymine and deoxyribose | Synonyms: thymidine |
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| deride | (verb) treat or speak of with contempt | - |
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| desideratum | (noun) something desired as a necessity | - |
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| desmid | (noun) freshwater green algae | - |
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| devoid | (adjective) completely wanting or lacking | Synonyms: barren, destitute, free, innocent |
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| diapsid | (noun) reptile having a pair of openings in the skull behind each eye | Synonyms: diapsid reptile |
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| diazoxide | (noun) vasodilator (trade name Hyperstat) used to treat severe hypertension | Synonyms: Hyperstat |
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| dicamptodontid | (noun) salamanders found near cold streams throughout the year | Synonyms: dicamptodon |
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| dichloride | (noun) a compound containing two chlorine atoms per molecule | Synonyms: bichloride |
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| didactic | (adjective) instructive (especially excessively) | Synonyms: didactical |
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| didactical | (adjective) instructive (especially excessively) | Synonyms: didactic |
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| didactically | (adverb) in a didactic manner | Synonyms: pedagogically |
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| didacticism | (noun) communication that is suitable for or intended to be instructive | - |
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| didactics | (noun) the activities of educating or instructing; activities that impart knowledge or skill | Synonyms: education, educational activity, instruction, pedagogy, teaching |
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| didanosine | (noun) an antiviral drug used to combat HIV infection, a reverse transcriptase inhibitor | Synonyms: ddI, DDI, dideoxyinosine |
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| didder | (verb) move with or as if with a tremor | Synonyms: shake |
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| diddle | (verb) manipulate manually or in one's mind or imagination | Synonyms: fiddle, play, toy |
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| (verb) deprive of by deceit | Synonyms: bunco, con, defraud, goldbrick, hornswoggle, mulct, nobble, rook, scam, short-change, swindle, victimize |
| diddley | (noun) a small worthless amount | Synonyms: diddly-shit, diddly-squat, diddly, diddlyshit, diddlysquat, doodly-squat, jack, shit, squat |
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| diddly | (noun) a small worthless amount | Synonyms: diddley, diddly-shit, diddly-squat, diddlyshit, diddlysquat, doodly-squat, jack, shit, squat |
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| diddlyshit | (noun) a small worthless amount | Synonyms: diddley, diddly-shit, diddly-squat, diddly, diddlysquat, doodly-squat, jack, shit, squat |
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| diddlysquat | (noun) a small worthless amount | Synonyms: diddley, diddly-shit, diddly-squat, diddly, diddlyshit, doodly-squat, jack, shit, squat |
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| dideoxycytosine | (noun) an antiviral drug used to combat HIV infection; a nucleoside analog reverse transcriptase inhibitor (NARTI) | Synonyms: ddC, DDC, zalcitabine |
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| dideoxyinosine | (noun) an antiviral drug used to combat HIV infection, a reverse transcriptase inhibitor | Synonyms: ddI, DDI, didanosine |
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| diffidence | (noun) lack of self-confidence | Synonyms: self-distrust, self-doubt |
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| diffident | (adjective) lacking self-confidence | Synonyms: shy, timid, unsure |
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| (adjective) showing modest reserve | - |
| diffidently | (adverb) in a diffident manner | - |
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| dihybrid | (noun) a hybrid produced by parents that differ only at two gene loci that have two alleles each | - |
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| dilapidate | (verb) fall into decay or ruin | Synonyms: crumble, decay |
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| (verb) bring into a condition of decay or partial ruin by neglect or misuse | - |
| dilapidated | (adjective) in deplorable condition | Synonyms: bedraggled, broken-down, derelict, ramshackle, tatterdemalion, tumble-down |
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| dilapidation | (noun) the process of becoming dilapidated | Synonyms: ruin |
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| (noun) a state of deterioration due to old age or long use | Synonyms: decrepitude |
| dioxide | (noun) an oxide containing two atoms of oxygen in the molecule | - |
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| diploid | (adjective) of a cell or organism having two sets of chromosomes or twice the haploid number | - |
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| (noun) (genetics) an organism or cell having the normal amount of DNA per cell; i.e., two sets of chromosomes or twice the haploid number | - |
| diploidy | (noun) the condition of being diploid | - |
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| disaccharidase | (noun) an enzyme that catalyzes the hydrolysis of disaccharides into monosaccharides | - |
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| disaccharide | (noun) any of a variety of carbohydrates that yield two monosaccharide molecules on complete hydrolysis | - |
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| discoid | (adjective) having a flat circular shape | Synonyms: disc-shaped, disclike, discoidal, disk-shaped, disklike |
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| discoidal | (adjective) having a flat circular shape | Synonyms: disc-shaped, disclike, discoid, disk-shaped, disklike |
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| dissidence | (noun) disagreement; especially disagreement with the government | - |
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| dissident | (adjective) disagreeing, especially with a majority | Synonyms: dissentient, dissenting |
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| (adjective) characterized by departure from accepted beliefs or standards | Synonyms: heretical, heterodox |
| (noun) a person who dissents from some established policy | Synonyms: contestant, dissenter, objector, protester |
| dividable | (adjective) can be divided usually without leaving a remainder | - |
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| divide | (noun) a ridge of land that separates two adjacent river systems | Synonyms: water parting, watershed |
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| (noun) a serious disagreement between two groups of people (typically producing tension or hostility) | - |
| (verb) perform a division | Synonyms: fraction |
| (verb) move or break apart | Synonyms: part, separate |
| (verb) force, take, or pull apart | Synonyms: disunite, part, separate |
| (verb) make a division or separation | Synonyms: separate |
| (verb) separate into parts or portions | Synonyms: carve up, dissever, separate, split, split up |
| (verb) act as a barrier between; stand between | Synonyms: separate |
| divided | (adjective) separated into parts or pieces | - |
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| (adjective) distributed in portions (often equal) on the basis of a plan or purpose | Synonyms: divided up, shared, shared out |
| (adjective) having a median strip or island between lanes of traffic moving in opposite directions | Synonyms: dual-lane |
| dividend | (noun) that part of the earnings of a corporation that is distributed to its shareholders; usually paid quarterly | - |
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| (noun) a bonus; something extra (especially a share of a surplus) | - |
| (noun) a number to be divided by another number | - |
| divider | (noun) a vertical structure that divides or separates (as a wall divides one room from another) | Synonyms: partition |
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| (noun) a drafting instrument resembling a compass that is used for dividing lines into equal segments or for transferring measurements | - |
| (noun) a person who separates something into parts or groups | - |
| (noun) a taxonomist who classifies organisms into many groups on the basis of relatively minor characteristics | Synonyms: splitter |
| dockside | (noun) the region adjacent to a boat dock | - |
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| downside | (noun) a negative aspect of something that is generally positive | - |
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| drawbridge | (noun) a bridge that can be raised to block passage or to allow boats or ships to pass beneath it | Synonyms: lift bridge |
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| druidism | (noun) the system of religion and philosophy taught by the Druids and their rites and ceremonies | - |
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| eastside | (adjective) of the eastern part of a city e.g. Manhattan | - |
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| ebbtide | (noun) the tide while water is flowing out | - |
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| ecdysteroid | (noun) #DD: The name 'ecdysteroid' refers to the insect moulting and sex hormones which include ecdysone and its homologues such as 20-hydroxyecdysone. | - |
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| echidna | (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia | Synonyms: anteater, spiny anteater |
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| (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea | Synonyms: anteater, spiny anteater |
| eider | (noun) duck of the Northern Hemisphere much valued for the fine soft down of the females | Synonyms: eider duck |
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| eiderdown | (noun) down of the eider duck | - |
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| (noun) a soft quilt usually filled with the down of the eider | Synonyms: continental quilt, duvet |
| eidetic | (adjective) of visual imagery of almost photographic accuracy | - |
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| eidos | (noun) (anthropology) the distinctive expression of the cognitive or intellectual character of a culture or a social group | - |
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| elapid | (noun) any of numerous venomous fanged snakes of warmer parts of both hemispheres | Synonyms: elapid snake |
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| elaterid | (noun) any of various widely distributed beetles | Synonyms: elater, elaterid beetle |
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| elide | (verb) leave or strike out | - |
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| ellipsoid | (adjective) having the nature or shape of an ellipsoid | Synonyms: ellipsoidal, spheroidal |
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| (noun) a surface whose plane sections are all ellipses or circles | - |
| ellipsoidal | (adjective) having the nature or shape of an ellipsoid | Synonyms: ellipsoid, spheroidal |
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| elucidate | (verb) make free from confusion or ambiguity; make clear | Synonyms: clear, clear up, crystalise, crystalize, crystallise, crystallize, enlighten, illuminate, shed light on, sort out, straighten out |
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| (verb) make clear and (more) comprehensible | Synonyms: clarify, clear up |
| elucidation | (noun) an interpretation that removes obstacles to understanding | Synonyms: clarification, illumination |
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| (noun) an act of explaining that serves to clear up and cast light on | - |
| elucidative | (adjective) that makes clear | Synonyms: clarifying |
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| embroider | (verb) add details to | Synonyms: aggrandise, aggrandize, blow up, dramatise, dramatize, embellish, lard, pad |
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| (verb) decorate with needlework | Synonyms: broider |
| embroiderer | (noun) someone who ornaments with needlework | - |
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| embroideress | (noun) a woman embroiderer | - |
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| embroidery | (noun) decorative needlework | Synonyms: fancywork |
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| (noun) elaboration of an interpretation by the use of decorative (sometimes fictitious) detail | Synonyms: embellishment |
| encainide | (noun) antiarrhythmic drug (trade name Enkaid) used to treat life-threatening arrhythmias but increases the risk of sudden death in heart attack patients | Synonyms: Enkaid |
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| enchiridion | (noun) a concise reference book providing specific information about a subject or location | Synonyms: handbook, vade mecum |
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| energid | (noun) a biological unit consisting of a nucleus and the body of cytoplasm with which it interacts | Synonyms: protoplast |
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| ephemerid | (noun) short-lived insect | Synonyms: ephemeropteran |
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| epicycloid | (noun) a line generated by a point on a circle rolling around another circle | - |
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| epideictic | (adjective) designed primarily for rhetorical display | Synonyms: epideictical |
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| epideictical | (adjective) designed primarily for rhetorical display | Synonyms: epideictic |
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