Wallace's line

noun
Wal·​lace's line | \ ˈwä-lə-səz- How to pronounce Wallace's line (audio) \

Definition of Wallace's line

: 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

First Known Use of Wallace's line

circa 1868, in the meaning defined above

History and Etymology for Wallace's line

Alfred Russel Wallace

Keep scrolling for more

Learn More about Wallace's line

Statistics for Wallace's line

Look-up Popularity

Time Traveler for Wallace's line

The first known use of Wallace's line was circa 1868

See more words from the same year

Comments on Wallace's line

What made you want to look up Wallace's line? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

formidable, illustrious, or eminent

Get Word of the Day daily email!

Test Your Vocabulary

The Exceptions Quiz III

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!