Any of various aquatic protozoans of the subclass Suctoria that have a free-swimming ciliated immature form and a sessile, stalked adult form that lacks cilia and feeds by means of suctorial tentacles.
Origin of suctorianFrom New Latin Sūctōria, class name, from neuter pl. of sūctōrius, suctorial; see suctorial.
- A protist of the subclass Suctoria in the class Phyllopharyngea; a predatory sessile ciliate.
From Suctoria + -an.