Echiuroidea

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Echiuroidea \Ech`i*u*roi"de*a\, n. pl. [NL., fr. echiurus, the
     name of one genus (Gr. 'e`chis an adder + o'yra` tail) +
     -oid.] (Zo["o]l.)
     A division of Annelida which includes the genus {Echiurus}
     and allies. They are often classed among the Gephyrea, and
     called the {armed Gephyreans}.


     [1913 Webster]