antrum

noun an·trum \ˈan-trəm\

plural an·tra \-trə\

Definition of ANTRUM

: an anatomical cavity within a bone (as the maxilla) or hollow organ (as the stomach)

— an·tral \-trəl\ adjective

Late Latin, from Latin, cave, from Greek antron; akin to Armenian ayr cave

First Known Use: circa 1751

Medical Dictionary

noun an·trum \ˈan-trəm\

plural an·tra \-trə\

: a cavity within a bone (as the maxilla) or hollow organ (as the stomach)

Next Word in the Dictionary: antrustionPrevious Word in the Dictionary: AntrostomusAll Words Near: antrum

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

Put-downs with flair

How to use a word that (literally) drives some people nuts.

Test your vocab with our fun, fast game

Ailurophobia, and 9 other unusual fears