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Definition of: fenestra
(fə·nes′trə) noun plural ·trae (-trē)
1. Anat. A windowlike aperture in the body: the fenestra ovalis, the opening between the tympanum and the vestibule of the middle ear, closed by the foot of the stapes. See illustration under EAR.
2. Entomol. A transparent, glassy spot, as in the wings of some insects. [<L]
—fe·nes′tral adjective
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