per·i·trich 
(pĕrĭ-trĭk′)
(pĕrĭ-trĭk′)n. pl. per·i·trichs also pe·rit·ri·cha (pə-rĭtrĭ-kə)
Any of various protozoans, such as the vorticella, having a wide oral opening surrounded by cilia.
[From New Latin Peritrichida, former order name : PERI- + Greek thrix, trikh-, hair.]