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Douglas Harper's Etymology Dictionary
nulliparous

1859, from medical Latin nullipara "female who has never given birth," from nulli-, stem of nullus "no" (see null) + -para, fem. of parus, from parere "to bring forth" (see pare) + -ous.

Wiktionary
nulliparous

a. 1 (context of a woman or female animal English) That has not given birth 2 (context of a mosquito or other female insect English) That has not yet laid eggs

Wikipedia
Nulliparous
  1. Redirect Gravidity and parity#Nulliparity

Usage examples of "nulliparous".

In the middle of my explanation she had turned away from the window and she again had her eye on the mentally nulliparous Plimpton.