Wallace's line

noun Wal·lace's line \ˈwä-lə-səz-\

Definition of Wallace's line

  1. :  a hypothetical boundary that separates the highly distinctive faunas of the Asian and Australian biogeographic regions and passes between the islands of Bali and Lombok in Indonesia, between Borneo and Sulawesi, and between the Philippines and the Moluccas

Origin and Etymology of wallace's line

Alfred Russel Wallace

First Known Use: circa 1868

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to cast off or become cast off

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