Definition of Nemertea in English:


proper noun

  • A small phylum that comprises the ribbon worms.

    • ‘This is strikingly illustrated if we just consider character choice in two subsequent publications by the same research group, for example, for placing the ‘acoelomate’ worms, Platyhelminthes, Nemertea, and Gnathostomulida.’
    • ‘Phylum Nemertea contains about 1,150 species of unsegmented worms that possess an eversible proboscis contained in a fluid-filled cavity or rhynchocoel.’
    • ‘Rouse chose as terminal taxa for his analysis most of the accepted polychaete families, and in addition Clitellata, Rotifera, Platyhelminthes, Nemertea, Mollusca, Sipuncula, Echiura, and Entoprocta.’
    • ‘However, opinions do differ for the scoring of three phyla in particular: Platyhelminthes, Nemertea, and Rotifera (variously scored as primitively possessing or lacking a prototroch).’
    • ‘The placement of Nemertea continues to be controversial.’


Modern Latin (plural), from Greek Nēmertēs, the name of a sea nymph.