intraperitoneal (adj.) Look up intraperitoneal at
1835, from intra- + peritoneal.
intrapersonal (adj.) Look up intrapersonal at
also intra-personal, 1853, from intra- + personal.
intrapsychic (adj.) Look up intrapsychic at
1917, from intra- + psychic.
intravenous (adj.) Look up intravenous at
1847, coined in English from intra- "within, inside" + Latin venous, from vena "vein" (see vein). Related: Intravenously.
intrepid (adj.) Look up intrepid at
1620s (implied in intrepidness), from French intrépide (16c.) and directly from Latin intrepidus "unshaken, undaunted," from in- "not" (see in- (1)) + trepidus "alarmed" (see trepidation). Related: Intrepidly.
intrepidity (n.) Look up intrepidity at
1704, from intrepid + -ity.
intricacy (n.) Look up intricacy at
c. 1600, from intricate + -acy.
intricate (adj.) Look up intricate at
early 15c., from Latin intricatus "entangled," past participle of intricare "to entangle, perplex, embarrass," from in- "in" (see in- (2)) + tricae (plural) "perplexities, hindrances, toys, tricks," of uncertain origin (compare extricate). Related: Intricately.
intrigante (n.) Look up intrigante at
"women given to intrigue," 1806, from fem. of French intrigant, from Italian intrigante, present participle of intrigare (see intrigue).
intrigue (v.) Look up intrigue at
1610s, "to trick, deceive, cheat" (earlier entriken, late 14c.), from French intriguer (16c.), from Italian intrigare "to plot, meddle," from Latin intricare "entangle" (see intricate). Meaning "to plot or scheme" first recorded 1714; that of "to excite curiosity" is from 1894. Related: Intrigued; intriguing (1680s, "plotting, scheming;" meaning "exciting curiosity" is from 1909).
intrigue (n.) Look up intrigue at
1640s, probably from intrigue (v.).
intrinsic (adj.) Look up intrinsic at
late 15c., "interior, inward, internal," from Middle French intrinsèque "inner" (13c.), from Medieval Latin intrinsecus "interior, internal," from Latin intrinsecus (adv.) "inwardly, on the inside," from intra "within" (see intra-) + secus "alongside," originally "following" (related to sequi "to follow;" see sequel). Meaning "belonging to the nature of a thing" is from 1640s. Related: Intrinsicly.
intro (n.) Look up intro at
short for introduction, attested from 1923.
intro- Look up intro- at
word-forming element, from Latin intro "on the inside, within, to the inside," from PIE *en-t(e)ro-, suffixed form of preposition *en "in" (see in).
introduce (v.) Look up introduce at
early 15c., back-formation from introduction, or else from Latin introducere "to lead in, bring in" (see introduction). Related: Introduced; introducing.
introduction (n.) Look up introduction at
late 14c., "act of bringing into existence," from Old French introduccion and directly from Latin introductionem (nominative introductio) "a leading in," noun of action from past participle stem of introducere "to lead in, bring in, to introduce," from intro- "inward, to the inside" (see intro-) + ducere "to lead" (see duke (n.)). Meaning "initial instruction in a subject; an introductory statement" is mid-15c. The sense of "formal presentation of one person to another" is from 1711.
introductory (adj.) Look up introductory at
c. 1600, from Late Latin introductorius, from introduct-, past participle stem of introducere "to lead in, bring in" (see introduction). Also used in English from c. 1400 as a noun meaning "introductory treatise or textbook."
introit (n.) Look up introit at
late 15c., from Old French introit (14c.), from Latin introitus "a going in," past participle of introire "to enter," from intro- (see intro-) + ire "to go" (see ion).
introject (v.) Look up introject at
1925, probably a back-formation from introjection. Related: Introjected; introjecting.
introjection (n.) Look up introjection at
1866, from intro- + stem abstracted from projection. In philosophical and psychoanalytical use, from German introjektion.
intron Look up intron at
1978, from intragenic + -on.
introspect (v.) Look up introspect at
1680s, from Latin introspectus, past participle of introspicere "look at, look into" (see introspection). Related: Introspected; introspecting.
introspection (n.) Look up introspection at
1670s, noun of action from past participle stem of Latin introspicere "to look into, look at," from intro- "inward" (see intro-) + specere "to look at" (see scope (n.1)).
introspective (adj.) Look up introspective at
1820, from Latin introspect-, past participle stem of introspicere (see introspection) + -ive.
introversion (n.) Look up introversion at
1650s, of thought or contemplation, from Modern Latin introversionem, noun of action from past participle stem of *introvertere (see introvert). Meaning "tendency to withdraw from the world" is from 1912.
introvert (v.) Look up introvert at
1650s, from Latin intro- "inward" (see intro-) + vertere "to turn" (see versus). The noun, "introverted person" (opposed to extrovert) is 1918, from German psychology, introduced there by C.G. Jung (1875-1961).
introverted (adj.) Look up introverted at
1781, "directed inward," past participle adjective from introvert. Psychological sense is from 1915.
intrude (v.) Look up intrude at
early 15c., back-formation from intrusion, or else from Latin intrudere "to thrust in" (see intrusion). Related: Intruded; intruding.
intruder (n.) Look up intruder at
1530s, agent noun from intrude. Originally legal.
intrusion (n.) Look up intrusion at
late 14c., from Old French intrusion (14c.), from Medieval Latin intrusionem (nominative intrusio) "a thrusting in," noun of action from past participle stem of Latin intrudere, from in- "in" (see in- (2)) + trudere "to thrust, push" (see extrusion).
intrusive (adj.) Look up intrusive at
c. 1400, from Latin intrus-, past participle stem of intrudere (see intrusion) + -ive. Related: Intrusively; intrusiveness.
intubate (v.) Look up intubate at
1610s, "to form into tubes," from in- (2) "in" + Latin tuba "tube" (see tuba) + -ate (2). Medical sense is from 1889. Related: Intubated; intubation.
intuit (v.) Look up intuit at
1776, "to tutor," from Latin intuit-, past participle stem of intueri (see intuition). Meaning "to perceive directly without reasoning" is from 1840, in this sense perhaps a back-formation from intuition. Related: Intuited; intuiting.
intuition (n.) Look up intuition at
mid-15c., from Late Latin intuitionem (nominative intuitio) "a looking at, consideration," noun of action from past participle stem of Latin intueri "look at, consider," from in- "at, on" (see in- (2)) + tueri "to look at, watch over" (see tuition).
intuitive (adj.) Look up intuitive at
1640s, from Middle French intuitif or directly from Medieval Latin intuitivus, from intuit-, past participle stem of intueri "look at, consider" (see intuition). Related: Intuitively; intuitiveness.
intumescence (n.) Look up intumescence at
1650s, from French intumescence, from Latin intumescere (see intumescent).
intumescent (adj.) Look up intumescent at
1796, from Latin intumescentem (nominative intumescens), present participle of intumescere "to swell up," from in- "in" (see in- (2)) + tumescere (see tumescence).
inturn (n.) Look up inturn at
1590s, "turning in of the toes" (especially in dancing), from in + turn.
intussusception (n.) Look up intussusception at
1707, literally "a taking in," from Latin intus "within" (see ento-) + susceptionem "a taking up" (see susceptible).
inundate (v.) Look up inundate at
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.) Look up inundation at
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.) Look up inure at
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.) Look up inutile at
late 15c., from French inutile (12c., inutele), from Latin inutilis "useless, unprofitable," from in- "not" (see in- (1)) + utilis (see utility).
inutility (n.) Look up inutility at
1590s, from Middle French inutilité (15c.), from Latin inutilitatem (nominative inutilitas) "uselessness," from inutilis (see inutile).
invade (v.) Look up invade at
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.) Look up invader at
1540s, agent noun from invade.
invaginate (v.) Look up invaginate at
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) Look up invalid at
"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) Look up invalid at
"of no legal force," 1630s, from special use of Latin invalidus (see invalid (adj.1)).
invalid (n.) Look up invalid at
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.