bioregion


bio·re·gion

noun \ˈbī-ō-ˌrē-jən\

Definition of BIOREGION

:  a region whose limits are naturally defined by topographic and biological features (as mountain ranges and ecosystems)
bio·re·gion·al \ˌbī-ō-ˈrēj-nəl, -ˈrē-jə-nəl\ adjective

First Known Use of BIOREGION

1978

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