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antra

 - 6 dictionary results

an⋅trum

  [an-truhm]
Use antra in a Sentence
–noun, plural -tra  [-truh] . Anatomy.
a cavity in a body organ, esp. a bone.
Origin:
1720–30; < L < Gk ántron cave

Related forms:
antral, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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an·tra   (ān'trə)   
n.  Plural of antrum.
an·trum   (ān'trəm)   
n.   pl. an·tra (-trə)

  1. A cavity or chamber, especially one in a bone.

  2. Either of the sinuses in the bones of the upper jaw, opening into the nasal cavity.


[Late Latin, cavity in the body, from Latin, cave, from Greek antron.]
an'tral adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: antra
plural of ANTRUM

Main Entry: an·trum
Pronunciation: 'an-tr&m
Function: noun
Inflected Form: plural an·tra /-tr&/
: thecavity of a hollow organ or a sinus antrum of the Graafian follicle>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

antrum an·trum (ān'trəm)
n. pl. an·tra (-trə)

  1. A nearly closed cavity or chamber, especially in a bone.

  2. The pyloric end of the stomach, partially shut off during digestion from the cardiac end by sphincter muscles in the stomach wall.

an'tral (-trəl) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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