antrum (redirected from tympanic antrum, antrum tympanicum)

an·trum  (ntrm)

n. pl. an·tra (-tr)

1. A cavity or chamber, especially one in a bone.

2. Either of the sinuses in the bones of the upper jaw, opening into the nasal cavity.

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[Late Latin, cavity in the body, from Latin, cave, from Greek antron.]

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antral adj.

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antrum [ˈæntrəm]

n pl -tra [-trə]

(Life Sciences & Allied Applications / Anatomy) Anatomy a natural cavity, hollow, or sinus, esp in a bone

[from Latin: cave, from Greek antron]

antral  adj

Thesaurus

Noun

1.

antrum - a natural cavity or hollow in a bone bodily cavity, cavum, cavity - (anatomy) a natural hollow or sinus within the body