[ an-truhm ]
/ ˈæn trəm /
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noun, plural an·tra [an-truh]. /ˈæn trə/. Anatomy.
a cavity in a body organ, especially a bone.
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Origin of antrum
1720–30; <Latin <Greek ántron cave
OTHER WORDS FROM antrumantral, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use antrum in a sentence
The continuance of the otorrhœa is presumably due to accumulation of pus in a large antral cavity.
British Dictionary definitions for antrum
/ (ˈæntrəm) /
noun plural -tra (-trə)
anatomy a natural cavity, hollow, or sinus, esp in a bone
Derived forms of antrumantral, 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