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fetus

nounattested in dialogue

  • //ˈfiːtəs//

An unborn or unhatched vertebrate showing signs of the mature animal.

noun

  1. 1

    An unborn or unhatched vertebrate showing signs of the mature animal.

    Several feti were removed from every rats' uterus, stripped of their membranes and allowed to lie in the peritoneal cavity connected to the placenta by the umbilical cord and with the placenta still attached to the uterine wall.

  2. 2

    A human embryo after the eighth week of gestation.

    The sequence is: molecules in reproductive systems, then gametes, zygotes, morulas, blastocysts, and then fetuses.

  3. 3

    archaicA neonate.

    The real essence of that or any other sort of substances, it is evident, we know not; and therefore are so undetermined in our nominal essences, which we make ourselves, that, if several men were to be asked concerning some oddly-shaped fœtus, as soon as born, whether it were a man or no, it is past doubt one should meet with different answers.

Etymology

A learned borrowing from Latin fētus (“offspring”). Doublet of fawn.

Forms

plural
fetuses, feti, fetii
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).