porostomatous, a. Zool.
(pɒrəʊ-, pɔərəʊˈstɒmətəs)
[f. mod.L. Porostomata (f. Gr. πόρο-ς pore + στόµα(τ-) mouth) + -ous.]
Belonging to or having the characters of the Porostomata, a group of nudibranchiate gastropods in which the mouth is pore-shaped.