Definition of in utero in US English:

in utero

adverb & adjective

  • In a woman's uterus; before birth.

    as adverb ‘this damage may occur in utero’
    as adjective ‘the in utero development of the gastrointestinal tract’
    • ‘The likelihood of the fetus contracting an in utero infection depends on several factors.’
    • ‘Her first heartbeat, first kick, every in utero move - all broadcast to a network of family and friends.’
    • ‘It appears that in utero exposure to nicotine may help to perpetuate a cycle across generations that links addiction and behavioral problems.’
    • ‘Among children who had at some time in their lives smoked daily for a month or more, those exposed in utero to a mother's pack-a-day smoking had double the odds of progressing to addiction.’
    • ‘Manipulating the in utero environment may alter the onset of cancers that appear later in the lives of mammals, according to a new University of Toronto study published in the journal Carcinogenesis.’
    embryonic, fetal, expected, awaited
    View synonyms




in utero

/in ˈyo͞otərō/