Definition of "foetus"

Amongst professional men, who have examined this singular foetus, a variety of opinions and conjectures have been formed, some of which it maybe well to notice.

1815, Nathaniel Highmore, Case of a Foetus Found in the Abdomen of a Young Man

During the last 10 weeks in utero the foetus stores very considerable amounts of energy in the form of fat.

1990, James M. Tanner, Foetus Into Man: Physical Growth from Conception to Maturity, page 40

The foetus gains all its food and oxygen from the mother during pregnancy.

2006, Denise Walker, Reproduction, Breathing and Health, page 23

But there were clues in their reproduction: all afrotherians have unusual placentas and produce more foetuses than can be nurtured in the womb.

2018, Tim Flannery, Europe: A Natural History, page 59