ˌtərbəˈla(a)rēə noun plural
Usage: capitalized
Etymology: New Latin, from Latin turbellae (plural) bustle, stir (diminutive of turba crowd, confusion, tumult) + New Latin -aria; from the tiny eddies created in water by their cilia — more at turbid
: a class of Platyhelminthes comprising mostly free-living comparatively small soft-bodied more-or-less leaf-shaped externally ciliated flatworms widely distributed in salt or fresh water but occasionally living on land or as parasites — see acoela , alloiocoela , polycladida , rhabdocoela , tricladida