round window

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round window (fenestra rotunda) A membrane-covered opening between the middle ear and the inner ear (see ear), situated below the oval window. Pressure waves transmitted through the perilymph in the cochlea are released into the middle ear through the round window, which bulges out into the middle-ear cavity.

A Dictionary of Biology

round window

views updated May 09 2018

round window n. see fenestra (rotunda).

A Dictionary of Nursing

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