intumescence (n.)youdaoicibaDictYouDict[intumescence 词源字典]
1650s, from French intumescence, from Latin intumescere (see intumescent).[intumescence etymology, intumescence origin, 英语词源]
intumescent (adj.)youdaoicibaDictYouDict
1796, from Latin intumescentem (nominative intumescens), present participle of intumescere "to swell up," from in- "in" (see in- (2)) + tumescere (see tumescence).
inturn (n.)youdaoicibaDictYouDict
1590s, "turning in of the toes" (especially in dancing), from in + turn.
intussusception (n.)youdaoicibaDictYouDict
1707, literally "a taking in," from Latin intus "within" (see ento-) + susceptionem "a taking up" (see susceptible).
inundate (v.)youdaoicibaDictYouDict
1620s, back-formation from inundation, or else from Latin inundatus, past participle of inundare "to overflow, run over" (see inundation). Related: Inundated; inundating.
inundation (n.)youdaoicibaDictYouDict
early 15c., from Latin inundationem (nominative inundatio) "an overflowing," noun of action from past participle stem of inundare "to overflow," from in- "onto" (see in- (2)) + undare "to flow," from unda "wave" (see water (n.1)).
inure (v.)youdaoicibaDictYouDict
early 15c., in ure "in practice," from obsolete ure "work, practice, exercise, use," probably from Old French uevre, oeuvre "work," from Latin opera (see opus). Related: Inured; inuring.
inutile (adj.)youdaoicibaDictYouDict
late 15c., from French inutile (12c., inutele), from Latin inutilis "useless, unprofitable," from in- "not" (see in- (1)) + utilis (see utility).
inutility (n.)youdaoicibaDictYouDict
1590s, from Middle French inutilité (15c.), from Latin inutilitatem (nominative inutilitas) "uselessness," from inutilis (see inutile).
invade (v.)youdaoicibaDictYouDict
late 15c., from Middle French invader "to invade," and directly from Latin invadere "to go into, enter upon; assail, assault, attack" (see invasion). Related: invaded; invading.
invader (n.)youdaoicibaDictYouDict
1540s, agent noun from invade.
invaginate (v.)youdaoicibaDictYouDict
1650s, from Medieval Latin invaginatus, past participle of invaginare "to put into a sheath," from Latin in- "in" (see in- (2)) + vagina "a sheath" (see vagina). Related: Invaginated; invagination.
invalid (adj.1)youdaoicibaDictYouDict
"not strong, infirm," 1640s, from Latin invalidus "not strong, infirm, weak, feeble," from in- "not" (see in- (1)) + validus "strong" (see valid). Specific meaning "infirm from sickness, disease, or injury" is from 1640s.
invalid (adj.2)youdaoicibaDictYouDict
"of no legal force," 1630s, from special use of Latin invalidus (see invalid (adj.1)).
invalid (n.)youdaoicibaDictYouDict
1709, originally of disabled military men, from invalid (adj.1). Invalides is short for French Hôtel des Invalides, home for old and disabled soldiers in the 7th arrondissement of Paris.
invalidate (v.)youdaoicibaDictYouDict
1640s, from invalid + -ate (2). Related: Invalidated; invalidating.
invalidation (n.)youdaoicibaDictYouDict
1771, noun of action from invalidate (v.).
invalidity (n.)youdaoicibaDictYouDict
1540s, from Latin invalidatus (see invalid (adj.)).
invaluable (adj.)youdaoicibaDictYouDict
1570s, "above value," from in- (1) "not" + value (v.) "estimate the worth of" + -able. It also has been used in a sense "without value, worthless" (1630s).
invariability (n.)youdaoicibaDictYouDict
1640s, from invariable + -ity.