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n. pl. per·i·trichs also pe·rit·ri·cha (pə-rĭt′rĭ-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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
pl n, sing peritrich (ˈpɛrɪˌtrɪk)
1. (Zoology) ciliate protozoans, of the order Peritrichida, in which the cilia are restricted to a spiral around the mouth
2. (Microbiology) bacteria having the entire cell surface covered with flagella
[C19: from New Latin, from peri- + Greek thrix hair]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014