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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 urochord
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From: Webster's Revised Unabridged Dictionary (1913)

 U·ro·chord n.  Zool. The central axis or cord in the tail of larval ascidians and of certain adult tunicates. [Written also urocord.]
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From: WordNet (r) 2.0

 urochord
      n 1: primitive marine animal having a saclike unsegmented body
           and a urochord (a notochord) conspicuous in the larva
           [syn: tunicate, urochordate]
      2: a notochord of a larval tunicate typically confined to the
         caudal region