Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The lowermost of the three divisions of the spiral cavity winding around the modiolus of the cochlea in the inner ear. It is filled with perilymph and transmits sound vibrations from the scala vestibuli, with which it is contiguous at the apex of the cochlea.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[New Latin scāla tympanī : Latin scāla, staircase (from its spiral structure ) + Latin tympanī, genitive of tympanum, drum (from its being separated from the tympanic cavity at one of its ends by a membrane ).]
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