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antrum

Syllabification: an·trum
Pronunciation: /ˈantrəm
 
/

Definition of antrum in English:

noun (plural antra /-trə/)

Anatomy
1A natural chamber or cavity in a bone or other anatomical structure.
Example sentences
  • Cholesterol granuloma is usually associated with chronic middle ear disease and is common in the mastoid antrum and air cells of the temporal bone.
  • Thus removal of a small cholesteatoma may allow for reconstruction of the outer attic wall or creation of a cavity that extends to or just beyond the mastoid antrum.
  • It's endoderm ultimately forms the lining of the auditory tube, tympanic cavity and mastoid antrum.
1.1The part of the stomach just inside the pylorus.
Example sentences
  • Multiple biopsies were taken from the duodenum, the gastric antrum, and the distal esophagus.
  • Surgical resection of the antrum and first duodenum was performed.
  • The gastroenterologist should map the stomach with adequate sampling of the antrum, corpus, and cardia.

Origin

early 19th century: from Latin, from Greek antron 'cave'.

Derivatives

antral

1
adjective
Example sentences
  • Upper endoscopy evaluations of 13 of the rosacea patients revealed that 8 had gastrointestinal disorders including antral gastritis, chronic atrophic gastritis, and duodenal ulcers.
  • Endoscopic ultrasonography showed a thickened antral wall with a mass in the gastric antrum.
  • Three antral biopsies were obtained within 2-5cm from the pylorus.

Definition of antrum in:

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