die-off

noun \ ˈdī-ˌȯf \

Definition of die-off

: a sudden sharp decline of a population of animals or plants that is not caused directly by human activity

First Known Use of die-off

1936


die off

verb \ ˈdī-ˈȯf \

Definition of die off

intransitive verb
: to die sequentially either singly or in numbers so that the total number is greatly diminished

First Known Use of die off

1697


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