c. 1600, "to fill with an ingredient, spirit, etc.;" 1640s as "make (a female) pregnant," from Late Latin impraegnatus "pregnant," past participle of impraegnare "to render pregnant," from assimilated form of in- "into, in" (from PIE root *en "in") + praegnare "make pregnant" (see pregnant). Earlier in same sense was impregn (1530s), which OED marks as "now only in poetic use."
*genə-, also *gen-, Proto-Indo-European root meaning "give birth, beget," with derivatives referring to procreation and familial and tribal groups.
It forms all or part of: Antigone; autogenous; benign; cognate; congener; congenial; congenital; connate; cosmogony; cryogenic; degenerate; engender; engine; epigone; eugenics; -gen; gendarme; gender; gene; genealogy; general; generate; generation; generic; generous; genesis; -genesis; genial; -genic; genital; genitive; genius; genocide; genotype; genre; gens; gent; genteel; gentile; gentle; gentry; genuine; genus; -geny; germ; german (adj.) "of the same parents or grandparents;" germane; germinal; germinate; germination; gingerly; gonad; gono-; gonorrhea; heterogeneous; homogeneous; homogenize; homogenous; impregnate; indigenous; ingenious; ingenuous; innate; jaunty; kermes; kin; kindergarten; kindred; king; kind (n.) "class, sort, variety;" kind (adj.) "friendly, deliberately doing good to others;" Kriss Kringle; malign; miscegenation; nada; naive; nascent; natal; Natalie; nation; native; nature; nee; neonate; Noel; oncogene; ontogeny; photogenic; phylogeny; pregnant (adj.1) "with child;" primogenitor; primogeniture; progenitor; progeny; puisne; puny; renaissance; theogony; wunderkind.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit janati "begets, bears," janah "offspring, child, person," janman- "birth, origin," jatah "born;" Avestan zizanenti "they bear;" Greek gignesthai "to become, happen," genos "race, kind," gonos "birth, offspring, stock;" Latin gignere "to beget," gnasci "to be born," genus (genitive generis) "race, stock, kind; family, birth, descent, origin," genius "procreative divinity, inborn tutelary spirit, innate quality," ingenium "inborn character," possibly germen "shoot, bud, embryo, germ;" Lithuanian gentis "kinsmen;" Gothic kuni "race;" Old English cennan "beget, create," gecynd "kind, nature, race;" Old High German kind "child;" Old Irish ro-genar "I was born;" Welsh geni "to be born;" Armenian cnanim "I bear, I am born."
1530s, "to satisfy, satiate, fill full" (senses now obsolete), from Latin saturatus, past participle of saturare "to fill full, sate, drench," from satur "sated, full" (from PIE root *sa- "to satisfy").
In chemistry, the meaning "to impregnate or unite with until no more can be received" is from 1680s; the general sense of "soak thoroughly, imbue (with)" is by 1756. The commercial sense of "oversupply" (a market, with a product) is by 1958. As a noun, "a saturated fat," by 1959. Related: Saturated; saturating.
late 14c., senten, originally a hunting term, "to find the scent of, perceive by smell," from Old French sentir "to feel, smell, touch, taste; realize, perceive; make love to," from Latin sentire " to feel, perceive by the senses; give one's opinion or sentiments" (see sense (n.)).
The unetymological -c- appeared 17c., perhaps in this case by influence of ascent, descent, etc., or by influence of science. But such an insertion was a pattern in early Modern English and also yielded scythe and for a time threatened to establish scite and scituate.
Figurative use from 1550s. The transitive sense "impregnate with an odor, make fragrant, perfume" is from 1690s. Related: Scented; scenting.
"masturbation," also "coitus interruptus," 1727, from Onan, name of the son of Judah (Genesis xxxviii.9), who spilled his seed on the ground rather than impregnate his dead brother's wife: "And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother's wife, that he spilled it on the ground, lest that he should give seed to his brother." The moral point of the verse was redirected by those who sought to suppress masturbation. Related: Onanist; onanistic.
1620s, "to cast as seed," from inseminatus, past participle of Latin inseminare "to sow, implant," from in- "in" (from PIE root *en "in") + semen (genitive semenis) "seed" (from PIE root *sē- "to sow"). Meaning "to impregnate with semen" is attested from 1897.
It has seemed necessary, therefore, to make a distinction between the introduction of seminal fluid into the female generative organs of animals and the subsequent possible fertilisation of their ova, and for that purpose I have used the word "inseminate," which can thus be applied to animals in precisely the same way as the word "pollenate" is applied by some botanists to denote the placing of pollen on the stigma of a plant. [Walter Heape, "The artificial Insemination of Mammals," Proceedings of the Royal Society of London, vol. lxi, 1897]
Related: Inseminated; inseminating.