echiurid
/ɛkɪˈ(j)ʊərɪd/Zoology
adjective
Of or relating to the phylum Echiura, or to the family Echiuridae.
noun
An animal of the phylum Echiura, or of the family Echiuridae.
Origin
Late 19th century; earliest use found in American Naturalist. From scientific Latin Echiurus + -id, after either French échiurides, or scientific Latin Echiuridae, family name, and, in later use, Echiurida, group name.