antrum

[ an-truh m ]

/ ˈæn trəm /

SEE MORE SYNONYMS FOR antrum ON THESAURUS.COM

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

a cavity in a body organ, especially a bone.

Nearby words

antroscope, antroscopy, antrostomy, antrotomy, antrotympanic, antrum, antrum of highmore, ants in one's pants, have, antseranana, antshrike, antsiranana

Origin of antrum

1720–30; < Latin < Greek ántron cave

Related forms

an·tral, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for antrum

The preliminary preparation, the position of the patient, and the instruments required are the same as in opening the antrum.
A System of Operative Surgery, Volume IV (of 4)|Various
They are both on the floor of the antrum, the round posterior corner and the narrow acute corner in front.
A System of Operative Surgery, Volume IV (of 4)|Various
Antrum duplicatum, 1-loculare, superne apertum, pericarpiis osseis intus nidulantibus.
The Botanical Magazine Vol. 8|William Curtis
As soon as the antrum is reached, pus will be seen to ooze through the opening made, especially if it is under tension.
A System of Operative Surgery, Volume IV (of 4)|Various

In my opinion, however, it is always wiser in such cases to open the antrum.
A System of Operative Surgery, Volume IV (of 4)|Various

British Dictionary definitions for antrum

antrum

/ (ˈæntrəm) /

noun plural -tra (-trə)

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

Derived Forms

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 antrum

antrum

[ ăn′trəm ]

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.

Related forms

an′tral (-trəl) adj.