'Siphonostomatous' definitions:

Definition of 'Siphonostomatous'

From: GCIDE

Siphonostomatous \Si`pho*no*stom"a*tous\, a. (Zool.) (a) Having the front edge of the aperture of the shell prolonged in the shape of a channel for the protection of the siphon; -- said of certain gastropods. (b) Pertaining to the Siphonostomata. [1913 Webster]