antrum

American  

[an-truhm] / ˈæn trəm /

noun

Anatomy.

plural

antra

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

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antrum British  

/ ˈæntrəm /

noun

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

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Other Word Forms

• antral adjective

Etymology

Origin of antrum

1720–30; < Latin < Greek ántron cave

Example Sentences

This degradation of the wall, combined with pressure from the large, fluid-filled antrum, results in the expulsion of the oocyte surrounded by granulosa cells into the peritoneal cavity.

From Textbooks • Jun. 19, 2013

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

The wider end of the funnel, the pyloric antrum, connects to the body of the stomach.

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

Now antrum means really the same as internum.

From The Continental Monthly, Vol. 6, No 4, August, 1864 Devoted To Literature And National Policy by Various