-ˌthelˈmin(t)(ˌ)thēz noun plural
Usage: capitalized
Etymology: New Latin, from nemat- + Helminthes
in some classifications : a phylum including the Nematoda and Nematomorpha and sometimes the Acanthocephala, the Rotifera, the Gastrotricha, and the Kinorhyncha, all being more or less wormlike animals with a cylindrical unsegmented body covered by an unciliated ectoderm that secretes an external cuticle