Rhizomastigida

Rhizomastigida

[¦rī·zō·mas′tij·əd·ə]
(invertebrate zoology)
An order of the protozoan class Zoomastigophorea; all species are microscopic and ameboid, and have one or two flagella.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.