Wallace's line

noun Zoogeography.

an imaginary line that separates the Oriental and Australian zoogeographical regions and passes between Bali and Lombok, west of Celebes, and east of the Philippines.

Origin of Wallace's line

First recorded in 1865–70; after A. R. Wallace

British Dictionary definitions for wallace's line

Wallace's line

noun

the hypothetical boundary between the Oriental and Australasian zoogeographical regions, which runs between the Indonesian islands of Bali and Lombok, through the Macassar Strait, and SE of the Philippines

Word Origin for Wallace's line

C20: named after Alfred Russel Wallace