The Collaborative International Dictionary
Peritricha
Peritricha \Pe*rit"ri*cha\, n. pl. [NL., fr. Gr. ? about + ?, ?, hair.] (Zo["o]l.) A division of ciliated Infusoria having a circle of cilia around the oral disk and sometimes another around the body. It includes the vorticellas. See Vorticella.