| urochorda | <zoology> Same as Tunicata. Origin: NL. See Urochord. Source: Websters Dictionary (01 Mar 1998) |
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| 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) |