Search Result for "urochordate": 
Wordnet 3.0

NOUN (1)

1. primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva;
[syn: tunicate, urochordate, urochord]



WordNet (r) 3.0 (2006):

urochordate
    n 1: primitive marine animal having a saclike unsegmented body
         and a urochord that is conspicuous in the larva [syn:
         tunicate, urochordate, urochord]