TURBELLARIAN

[tur.bel.lar.i.an] n [ultim. fr. L turbellae (pl.) bustle, stir, dim. of turba confusion, crowd; fr. the tiny eddies created in water by the cilia] (1883): any of a class (Turbellaria) of mostly aquatic and free-living flatworms (as a planarian) -- turbellarian adj