Definition of rotatorian in English:

rotatorian

noun

  • A minute or microscopic animal of the class or phylum Rotatoria ; (now) specificallya rotifer.

adjective

rare
  • Of or relating to the class or phylum Rotatoria.

Origin

Mid 19th century; earliest use found in Andrew Pritchard (1804–1882), microscopist. From Rotatoria+ -ian.

Pronunciation

rotatorian

/rə(ʊ)təˈtɔːrɪən/