oligochaetous


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ol·i·go·chaete

 (ŏl′ĭ-gō-kēt′, ō′lĭ-)
n.
Any of various annelid worms of the class (or subclass) Oligochaeta, including the earthworms and aquatic species found chiefly in freshwater, which lack the appendages typical of polychaetes.

[From New Latin Oligochaeta, class name : oligo- + chaeta.]

ol′i·go·chae′tous (-kē′təs) adj.
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.