antrum
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(an′trŭm)

(an′tră)
pl. antra [L. antrum fr. Gr. antron, cave]
A nearly closed cavity or chamber, esp. in a bone.
antral (an′trăl)

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(an′trŭm)

(an′tră)
pl. antra [L. antrum fr. Gr. antron, cave]
A nearly closed cavity or chamber, esp. in a bone.
antral (an′trăl)

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