air sinus

air sinus
air sinus n an air-containing cavity (as a paranasal sinus and esp. a maxillary sinus) in bone

* * *

an air-containing space within the substance of a bone.

Medical dictionary. 2011.

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  • sinus — 1. [TA] A channel for the passage of blood or lymph, without the coats of an ordinary vessel; e.g., blood passages in the gravid uterus or those in the cerebral meninges. 2. [TA] A cavity or …   Medical dictionary

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