'Urochord' definitions:
Definition of 'urochord'
(from WordNet)
noun
Primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva [syn: tunicate, urochordate, urochord]
noun
A notochord of a larval tunicate typically confined to the caudal region
Definition of 'Urochord'
From: GCIDE
- Urochord \U"ro*chord\, n. [2d uro- + chord.] (Zool.) The central axis or cord in the tail of larval ascidians and of certain adult tunicates. [Written also urocord.] [1913 Webster] Urochorda