In Utero is a Latin-derived adverb meaning 'in the womb' or 'within the uterus.' It is used in medical or poetic contexts to denote fetal life before birth, often in discussions of development, prenatal events, or historical contexts. The phrase is usually treated as a unit in English, with stress on the second word, and can be used as a modifier or adverbial phrase. Formal and precise in register, it appears in scholarly and clinical writing as well as literary prose.
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