also copy-cat, derogatory term for one who copies another or another's work, by 1884, American English, probably at least a generation older, from copy (v.) + cat (n.). Domestic cats sometimes will imitate each other's behaviors. As a verb, "to slavishly imitate," from 1932. Related: Copycatted; copycatting.
"plurality of origins," in biology, "generation or origination from several separate and often independent germs; as a doctrine, equivalent to special creation; originally and often specifically in reference to the view that the human race consists of several distinct species, 1858, from poly- + -genesis "birth, origin, creation." Also see polygeny.
daughter of Oedipus, her name in Greek might mean "in place of a mother," from anti "opposite, in place of" (see anti-) + gonē "womb, childbirth, generation," from root of gignesthai "to be born" related to genos "race, birth, descent" (from PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups).
rogue's cant 16c.-17c. for "a wench, a young girl of the vagrant class," 1560s, of uncertain origin.
A Dell is a yonge wenche, able for generation, and not yet knowen or broken by the vpright man. ... [W]hen they have beene lyen with all by the vpright man then they be Doxes, and no Dells. [Thomas Harman, "A Caveat or Warning for Common Cursitors," 1567]
The extension of the sense to corresponding relationships of descent, "a generation younger than" (grandson, granddaughter) is from Elizabethan times. The inherited PIE root, *nepot- "grandchild" (see nephew) has shifted to "nephew; niece" in English and other languages (Spanish nieto, nieta). Old English used suna sunu ("son's son"), dohtor sunu ("son's daughter").
1590s, "situated under the moon," hence "earthly, mundane" (old cosmology), from Modern Latin sublunaris, from sub "under, beneath" (see sub-) + lunaris (see lunar). It owes its special sense to the old cosmology of heavenly spheres and ultimately to Aristotle:
The treatise On the Heavens sets forth a pleasant and simple theory. Things below the moon are subject to generation and decay; from the moon upwards, everything is ungenerated and indestructible. [Bertrand Russell, "A History of Western Philosophy"]