| urochord | <zoology> The central axis or cord in the tail of larval ascidians and of certain adult tunicates. Alternative forms: urocord. Origin: 2d uro- + chord. Source: Websters Dictionary (01 Mar 1998) |
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| urochorda | <zoology> Same as Tunicata. Origin: NL. See Urochord. Source: Websters Dictionary (01 Mar 1998) |
| urochordal | <zoology> Of or pertaining to the Urochorda. Source: Websters Dictionary (01 Mar 1998) |
| urochordata | A subphylum of chordates intermediate between the invertebrates and the true vertebrates. (12 Dec 1998) |