turbellarian[tʉr′bə ler′ē ən]
turbellarian definition by Webster's New World
Origin: ; from Modern Latin Turbellaria ; from Classical Latin turbellae, a bustle, stir, diminutive of turba, a crowd (see turbid), disturbance (from water currents caused by the cilia) plush -an
turbellarian definition by American Heritage Dictionary
Origin: From New Latin Turbellāria, class name, from Latin turbella, bustle, diminutive of turba, turmoil (from the motion of their cilia in the water); see turbid.