[ an-truh m ]
/ ˈæn trəm /

noun, plural an·tra [an-truh] /ˈæn trə/. Anatomy.

a cavity in a body organ, especially a bone.

Origin of antrum

1720–30; < Latin < Greek ántron cave


an·tral, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for antral

/ (ˈæntrəm) /

noun plural -tra (-trə)

anatomy a natural cavity, hollow, or sinus, esp in a bone

Derived forms of antrum

antral, adjective

Word Origin for antrum

C14: from Latin: cave, from Greek antron
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for antral

[ ăntrəm ]

n. pl. an•tra (-trə)

A nearly closed cavity or chamber, especially in a bone.
The pyloric end of the stomach, partially shut off during digestion from the cardiac end by sphincter muscles in the stomach wall.

Other words from antrum

antral (-trəl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.