n.
Pronunciation: ' an-tr ə m
Function: noun
Inflected Form: plural an · tra \ -tr ə \
Etymology: Late Latin, from Latin, cave, from Greek antron; akin to Armenian ayr cave
Date: circa 1751
: an anatomical cavity within a bone (as the maxilla) or hollow organ (as the stomach)
– an · tral \ -tr ə l \ adjective