suc·​to·​ri·​an ˌsək-ˈtȯr-ē-ən How to pronounce suctorian (audio)
: any of a class or subclass (Suctoria) of complex protozoans which are ciliated only early in development and in which the mature form is fixed to the substrate, lacks locomotor organelles or a mouth, and obtains food through specialized suctorial tentacles

Word History


New Latin Suctoria, from neuter plural of suctorius suctorial

First Known Use

circa 1842, in the meaning defined above

Time Traveler
The first known use of suctorian was circa 1842

Dictionary Entries Near suctorian

Cite this Entry

“Suctorian.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2024.

Medical Definition


suc·​to·​ri·​an -ē-ən How to pronounce suctorian (audio)
: any protozoan of the class Suctoria

More from Merriam-Webster on suctorian

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!