any of a phylum (Nemertea) of usually very elongate, unsegmented marine worms with no body cavity and with a protrusile proboscis, living mostly in coastal mud or sand; ribbon worm
Origin of nemerteanfrom Modern Latin Nemertea from Classical Greek N?mert?s, name of a sea nymph from n?mert?s, unerring
of or belonging to these worms
also nem′er·tine or nem·er·tin′ean
Any of various unsegmented chiefly carnivorous worms of the phylum Nemertea (or Nemertini) that have a long, often brightly colored body with an extensible proboscis and typically live in the sea or in the mud of the intertidal zone. Also called ribbon worm .
Origin of nemerteanFrom New Latin Nēmertēs type genus from Greek name of a Nereid