Eustachian
Pronunciation : Eu*sta"chi*an
Part of Speech : a.
Etymology : [From Eustachi, a learned Italian physician who died in Rome, 1574.] (Anat.) (a) Discovered by Eustachius. (b) Pertaining to the Eustachian tube; as, Eustachian catheter. Eustachian catheter, a tubular instrument to be introduced into the Eustachian tube
Source : Webster's Unabridged Dictionary, 1913