Dictionary.com
Thesaurus.com
Showing results for antrum. Search instead for antrums.
Synonyms

antrum

American  
[an-truhm] / ˈæn trəm /

noun

Anatomy.

plural

antra
  1. a cavity in a body organ, especially a bone.


antrum British  
/ ˈæntrəm /

noun

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

"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

Other Word Forms

  • antral adjective

Etymology

Origin of antrum

1720–30; < Latin < Greek ántron cave

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Cells that make up the pyloric antrum secrete mucus and a number of hormones, including the majority of the stimulatory hormone, gastrin.

From Textbooks • Jun. 19, 2013

Early tertiary follicles with their fluid-filled antrum will be stimulated by an increase in FSH, a gonadotropin produced by the anterior pituitary, to grow in the 28-day ovarian cycle.

From Textbooks • Jun. 19, 2013

A thick fluid, called follicular fluid, that has formed between the granulosa cells also begins to collect into one large pool, or antrum.

From Textbooks • Jun. 19, 2013

Dr. Bartlett pays more attention than many other experts to the antrum, the lower part of the stomach's rear wall, which partly controls the output of acids.

From Time Magazine Archive

Mastoid pain and tenderness are indicative of inflammation in the antrum or cells, and when these symptoms supervene in the course of a chronic middle-ear suppuration, they should always be regarded as of grave import.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Miles, Alexander