English Lexicon

Semelparous

/ˌsɛm.əlˈpɛə.rəs/
adjectiveCEFR C2 (Proficient)Top #45000 frequency
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1 sense
As adjective
  1. 1

    Characterized by a single reproductive episode before death.

    "Pacific salmon are famously semelparous, spawning once in their lifetime and dying shortly afterward."

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Synonyms (1)
Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Latin 'semel' meaning 'once' and 'parere' meaning 'to beget' or 'to bring forth', combined with the English adjectival suffix '-ous'. Coined in ecological terminology during the 20th century to describe organisms that reproduce only once before dying.

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