rotatorian
/rə(ʊ)təˈtɔːrɪən/Zoology
noun
A minute or microscopic animal of the class or phylum Rotatoria; (now) specificallya rotifer.
adjective
Of or relating to the class or phylum Rotatoria. Now rare.
Origin
Mid 19th century; earliest use found in Andrew Pritchard (1804–1882), microscopist. From Rotatoria+ -ian. With use as adjective compare earlier rotatorial.