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 ]
a. (Zool.) Of or pertaining to the Urochorda. [ 1913 Webster ]
prop. n. pl. [ NL. See Urochord. ] (Zool.) Same as Tunicata. [ 1913 Webster ]