Relating to or belonging to the class Bivalvia; a member of the bivalve mollusks.
From 'Bivalvia' (the class name) + '-an' (a suffix indicating membership). The '-an' ending parallels biological terminology like 'reptilian' and 'avian.'
All bivalvians share a surprisingly simple body plan—they lack eyes, a brain, and a head, yet they thrive in almost every ocean and freshwater environment on Earth! Some have evolved eyes around their shell edges that can detect shadows and movements.
Complete word intelligence in one call. Free tier — 50 lookups/day.