Vestibulum n. : A cavity into which, in certain bryozoans, the esophagus and anus open.

Example:


Taxonomy
Vestibule, Vestibule of the ear, cochlea, vestibulum, free encyclopedia, pyramid of the vestibule, perforated, holes, recessus ellipticus, semicircular canals, macula, transversely, medial wall, circular depression, recessus sphæricus, passage, filaments, orifice.

Defination from the web:
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