antrum

[an-truh m]

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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

Related formsan·tral, adjective

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

Related Words for antrum

recess, opening, hollow, pocket, channel, depression

Examples from the Web for antrum

Historical Examples of antrum

Antrum duplicatum, 1-loculare, superne apertum, pericarpiis osseis intus nidulantibus.
The Botanical Magazine Vol. 8
William Curtis
We found that the tumor did extend from the antrum, into which I could bore my finger easily.
New, Old, and Forgotten Remedies: Papers by Many Writers
Various
It is rarely possible to enter the antrum through its natural ostium.
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
The antrum pyloricum is small and not very distinctly marked.
Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6
Various

British Dictionary definitions for antrum

antrum

noun plural -tra (-trə)

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

Derived Formsantral, 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

Word Origin and History for antrum

"a cave or cavity," late 14c., medical Latin, from Greek antron "cave."

antrum in Medicine

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 formsan′tral (-trəl) adj.