semelparous


sem·el·pa·rous

adjective \ˌse-ˈmel-pə-rəs\

Definition of SEMELPAROUS

:  reproducing or breeding only once in a lifetime <semelparous salmon>

Origin of SEMELPAROUS

Latin semel once (akin to Latin simul at the same time) + English -parous — more at same
First Known Use: 1954

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