Medical Dictionary


noun pl Nem·a·thel·min·thes \-ˌthel-ˈmin(t)-(ˌ)thēz\

Medical Definition of NEMATHELMINTHES

in some classifications :  a phylum including the nematodes and horsehair worms and sometimes the acanthocephalans, rotifers, gastrotrichs, and minute marine organisms of a related class (Kinorhyncha) which are all more or less wormlike animals with a cylindrical unsegmented body covered by an ectoderm without cilia that secretes an external cuticle


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