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suctorian
suc·to·ri·an
noun 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.
Origin: From New Latin Sūctōria, class name, from neuter pl. of sūctōrius, suctorial; see suctorial .