antra


noun, plural an·tra [an-truh] /ˈæn trə/. Anatomy.

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

noun plural -tra (-trə)

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

“a cave or cavity,” late 14c., medical Latin, from Greek antron “cave.”

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.

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