Invertebrates, Zoologyany of a group of wormlike mollusks, class Solenogastres (formerly Aplacophora), inhabiting deep ocean layers and having fine limy spicules on the covering mantle. Also called aplacophoran.
Greek gasté̄r paunch, belly
Neo-Latin, equivalent. to soleno- (combining form of Greek sōlé̄n pipe, channel; see -o-) + -gaster