- derby (n.)
[derby 词源字典] - type of hat," manufactured in U.S. 1850, name appears 1870, perhaps from annual Derby horse race in England, where this type of hat was worn. Race was begun 1780 by the 12th Earl of Derby; the name was used for any major horse race after 1875. Derby the English shire is Old English Deorby "deer village," from deor "deer" + by "habitation, homestead," from a Scandinavian source (see bylaw).[derby etymology, derby origin, 英语词源]
- derecho (n.)
- from American Spanish derecho, from Old Spanish diestro, from Latin directus (see direct (v.)).
- deregulate (v.)
- 1963, back-formation from deregulation. Related: Deregulated; deregulating.
- derelict (adj.)
- 1640s, from Latin derelictus "solitary, deserted," past participle of dereliquere "to abandon, forsake, desert," from de- "entirely" + relinquere "leave behind" (see relinquish). Originally especially of vessels abandoned at sea or stranded on shore. As a noun, from 1660s.
- dereliction (n.)
- 1590s, "abandonment" (formerly with a wider range than in modern use, such as of the sea withdrawing from the land), from Latin derelictionem (nominative derelictio), noun of action from past participle stem of derelinquere (see derelict). Meaning "failure in duty" is from c. 1830.
- deride (v.)
- 1520s, from Middle French derider, from Latin deridere "to ridicule, laugh to scorn" (see derision). Related: Derided; deriding.
- derision (n.)
- c. 1400, from Old French derision "derision, mockery" (13c.), from Latin derisionem (nominative derisio), noun of action from past participle stem of deridere "ridicule," from de- "down" (see de-) + ridere "to laugh."
- derisive (adj.)
- 1620s, "characterized by derision," from Latin deris-, past participle stem of deridere (see derision) + -ive. Meaning "ridiculous" is from 1896. Related: Derisively.
- derisory (adj.)
- 1610s, from Latin derisorius, from derisor "derider," agent noun from deridere (see deride).
- derivate (adj.)
- late 15c., from Latin derivatus, past participle of derivare (see derive). From 1650s as a noun.
- derivation (n.)
- early 15c., from Middle French dérivation (14c.), from Latin derivationem (nominative derivatio) "a leading off, turning away," noun of action from past participle stem of derivare (see derive). Grammatical sense is older; general meaning "origination, descent" is from c. 1600.
- derivative
- early 15c. (adj.); mid-15c. (n.), from Middle French dérivatif (15c.), from Late Latin derivat-, past participle stem of Latin derivare (see derive). Mathematical sense is from 1670s.
- derive (v.)
- late 14c., from Old French deriver "to flow, pour out; derive, originate," from Latin derivare "to lead or draw off (a stream of water) from its source" (in Late Latin also "to derive"), from phrase de rivo (de "from" + rivus "stream;" see rivulet). Etymological sense is 1550s. Related: Derived; deriving.
- derm (n.)
- 1835, from Greek derma "skin, hide, leather" (see derma).
- derma (n.)
- "skin beneath the epidermis," 1706, from Modern Latin derma, from Greek derma (genitive dermatos) "skin," from PIE root *der- (2) "to split, peel, flay" (see tear (v.1)).
- dermabrasion (n.)
- 1954; see derma + abrasion.
- dermal (adj.)
- 1803; see derm + -al (1). A native formation, the Greek adjective would be dermatikos, yielding *dermatic.
- dermatitis (n.)
- 1851; see dermato- + -itis "inflammation."
- dermato-
- before vowels, dermat-, word-forming element meaning "of or pertaining to skin," from Greek dermato- (shortened form dermo-), from derma "skin" (see derma).
- dermatologist (n.)
- 1833; see dermatology + -ist.
