DictionaryAI

fetus

noun
USFEE-tuhs/ˈfitəs/

Pluralfetuses, fetus

UK spellingfoetus

2 meanings of fetus

Practice

  1. 1
    unborn babynouncountable
    An unborn baby or young animal that has formed its main body parts.

    The ultrasound showed the fetus kicking its legs.

    The doctor checked the fetus's heartbeat at every visit.

    UsageThe plural is fetuses.

    Note
  2. 2
    nounarchaic
    A baby that has just been born.
    Note

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Origin

From the Latin word fētus, meaning "offspring".

Checked 30 Oct 2026 · 1 fact