Skip to Content


Pronunciation: per'i-trik'i-da

Definition: An order of ciliates (subclass Peritrichia, phylum Ciliophora) characterized by a cylindric shape with the cilia usually limited to the zone surrounding the mouth opening; includes the suborder Mobilina, the members of which are all ectoparasites or endoparasites of aquatic invertebrates and vertebrates, of which the genus Trichodina includes economically significant gill parasites of fish.

[peri- + G. thrix, hair]

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.