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fetus

Pronunciation: /ˈfiːtəs/
(British (in non-technical use) also foetus)
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Definition of fetus

noun (plural fetuses)

  • an unborn or unhatched offspring of a mammal, in particular, an unborn human more than eight weeks after conception.

Origin:

late Middle English: from Latin fetus 'pregnancy, childbirth, offspring'

The spelling foetus has no etymological basis but is recorded from the 16th century and until recently was the standard British spelling in both technical and non-technical use. In technical usage fetus is now the standard spelling throughout the English-speaking world, but foetus is still found in British English outside technical contexts.

fetus in other Oxford dictionaries

Definition of fetus in the US English dictionary