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单词 fetus
释义

fetus

/ˈfiːtəs /
(British (in non-technical use) also foetus)
noun (plural fetuses)
An unborn or unhatched offspring of a mammal, in particular, an unborn human more than eight weeks after conception.A small subset of fetuses with large lung lesions will become hydropic, deteriorate rapidly, and die in utero....
  • Feedback is currently being used in a trial of early versus delayed delivery for preterm, growth retarded fetuses.
  • How well a woman and the fetus do during pregnancy depends upon the type of heart problem.

Synonyms

embryo, fertilized egg, unborn baby, unborn child

Usage

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.

Origin

Late Middle English: from Latin fetus 'pregnancy, childbirth, offspring'.

  • effete from early 17th century:

    Today effete is usually used of a young man who is affected and rather effeminate, but the word originally referred to animals and meant ‘no longer fertile, too old to bear young’. It comes from Latin effetus, from ex-, meaning ‘out’, and fetus ‘breeding, childbirth, offspring’—the same word as English foetus (Late Middle English) (US fetus). The meaning developed into ‘having exhausted strength or vigour’ and in the late 18th century on to ‘feeble, over-refined’.

Rhymes

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更新时间:2025/3/23 7:32:21