"having never given birth," 1837, from medical Latin nullipara "woman (especially one not a virgin) who has never given birth," from nulli-, stem of nullus "no" (see null) + -para, fem. of parus, from parire "to bring forth" (from PIE root *pere- (1) "to produce, procure") + -ous.

"first in order of birth," as a noun, "first-born child," mid-14c., from first (adj.) + born.

(Latin plural genera), 1550s as a term of logic, "kind or class of things" (biological sense dates from c. 1600), from Latin genus (genitive generis) "race, stock, kind; family, birth, descent, origin" (from suffixed form of PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups).

"existing from birth," 1796, from Latin congenitus "born or produced together," from assimilated form of com "together, with" (see con-) + genitus, past participle of gignere "to beget" (from PIE root *gene- "give birth, beget"). This sense formerly belonged to congenial (which is attested from 1660s with this meaning). Related: Congenitally.

also antepartum, "occurring or existing before birth," 1908, from Latin phrase ante partum "before birth," from ante "before" (from PIE root *ant- "front, forehead," with derivatives meaning "in front of, before") + accusative of partus "a bearing, a bringing forth," from partus, past participle of parire "to bring forth" (from PIE root *pere- (1) "to produce, procure").

"formation and development of the ovum," by 1890, from oo- "egg"+ -genesis "birth, origin, creation." Related: Oogenetic.