Siphonostomatous :: Siphonostomatous (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.
Stomatoplastic :: Stomatogastric (a.) Of or pertaining to the mouth and the stomach; as, the stomatogastric ganglion of certain Mollusca..
Stomatopod :: Stomatoplastic (a.) Of or pertaining to the operation of forming a mouth where the aperture has been contracted, or in any way deformed..