a protozoan of the class or order Suctoria, which live, as adults, attached by a stalk to the substrate and feed by means of long, suctorial tentacles.
–adjective
3.
belonging or pertaining to the Suctoria.
Origin: 1835–45; < NL Suctori(a), n. use of neut. pl. of sūctōrius sucking (< L sūg(ere) to suck+ -tōrius-tory1) + -an
suc·to·ri·an (sŭk-tôr'ē-ən, -tōr'-) n. A protozoan of the class Suctoria, having in its immature form a small round ciliated body but in its adult form being stalked and sessile, lacking cilia, and feeding by means of suctorial tentacles.
[From New Latin Sūctōria, class name, from neuter pl. of sūctōrius, suctorial; see suctorial.]