Definition of: oligochaete

(ol′ə·gō·kēt′) noun
One of a class (Oligochaeta) of fresh-water and terrestrial hermaphroditic annelid worms, including the earthworms, which lack a distinct head.
—adjective Of or pertaining to the Oligochaeta. Also ol′i·go·chete′. [<NL <Gk. oligos few + chaitē bristle, mane; so called because it has a small number of bristly locomotive organs]
—ol′i·go·chae′tous (-kē′təs) adjective