uniparous

/juːˈnɪpərəs/
adjective
  1. Producing only one offspring at a time (used especially in biology and medicine).
    • Humans are typically uniparous, giving birth to one baby at a time.
    • Most large mammals are uniparous, unlike rodents which have many young.
    • The uniparous nature of elephants means each pregnancy results in a single calf.
Antonyms
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