noun. any sort of bursiform expansion of a conduit or pathway. Ampullae based at each end of the curved pathways of the inner ear consist of hair cells which assist in retaining equilibrium.

AMPULLA: "The ampullae of the uterine tubes partially surround a portion of the ovaries."
Cite this page: N., Pam M.S., "AMPULLA," in, April 7, 2013, (accessed April 11, 2021).