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

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

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

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

These bony caverns are called the frontal, maxillary or antrum, ethmoid and sphenoid sinuses.

From Time Magazine Archive

In poetry the Ablative of Quality sometimes denotes material; as,— scopulīs pendentībus antrum, a cave of arching rocks.

From New Latin Grammar by Bennett, Charles E. (Charles Edwin)