英语词源字典 - 在线词源网站

didactylous [didactylous 词源字典]: "= didactyl", Early 19th cent.; earliest use found in George Shaw (1751–1813), natural historian. From di- + -dactylous, after post-classical Latin didactylus.[didactylous etymology, didactylous origin, 英语词源]
Dryopithecus: "A fossil anthropoid ape of the middle Miocene to early Pliocene periods, of a genus including the supposed common ancestor of gorillas, chimpanzees, and humans", Modern Latin, from Greek drus 'tree' + pithēkos 'ape'.
dictyostele: "A type of stele found in certain vascular plants (especially ferns) which is broken up into a network of meristeles separated by parenchymatous areas usually associated with leaf-gaps", Early 20th cent. From dictyo- + stele.
discerption: "The action of pulling something apart", Mid 17th century: from late Latin discerptio(n-), from Latin discerpere 'pluck to pieces'.
deep throat: "A person who anonymously supplies information about covert or illegal action in the organization where they work", 1970s: the title of a pornographic film of 1972, first applied in this sense as the name (‘Deep Throat’) of an informant in the Watergate scandal.
dicrotic: "Denoting a pulse in which a double beat is detectable for each beat of the heart", Early 19th century: from Greek dikrotos 'beating twice' + -ic.
doubting Thomas: "A person who is sceptical and refuses to believe something without proof", Early 17th century: with biblical allusion to the apostle Thomas (John 20:24–29).
duopoly: "A situation in which two suppliers dominate the market for a commodity or service", 1920s: from duo-, on the pattern of monopoly.
dysphoria: "A state of unease or generalized dissatisfaction with life", Mid 19th century: from Greek dusphoria, from dusphoros 'hard to bear'.
divertimento: "A light and entertaining composition, typically one in the form of a suite for chamber orchestra", Mid 18th century (denoting a diversion or amusement): Italian, literally 'diversion'.
discernable: "Distinguishable from something else; = discernible", Mid 16th cent.; earliest use found in William Patten (d. ?1598), author. From discern + -able.
detent: "A catch in a machine which prevents motion until released", Late 17th century (denoting a catch in a clock): from French détente, from Old French destente, from destendre 'slacken', from des- (expressing reversal) + Latin tendere 'to stretch'.
da capo: "(Especially as a direction) repeat from the beginning", Italian, literally 'from the head'.
deuterostome: "A deuterostomatous animal; also as adjective", 1950s; earliest use found in Libbie Hyman (1888–1969).
damnify: "Cause injury to", Early 16th century: from Old French damnefier, dam(p)nifier, from late Latin damnificare 'injure, condemn', from Latin damnificus 'hurtful', from damnus 'loss, damage'.
denumerable: "Able to be counted by a one-to-one correspondence with the infinite set of integers", Early 20th century: from late Latin denumerare 'count out' + -able.
droit: "A right or due", Late Middle English: from Old French, based on Latin directus 'straight, right, direct'.
dedans: "(In real tennis) an open gallery for spectators at the service side of a court", Early 18th century: French, literally 'inside'.
duramen: "The heartwood of a tree", Mid 19th century: from Latin, literally 'hardness', from durare 'harden'.
disjoint: "Disturb the cohesion or organization of", Late Middle English (as an adjective in the sense 'disjointed'): from Old French desjoint 'separated', from the verb desjoindre (see disjoin).