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protochordate

[proh-toh-kawr-deyt]
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noun Zoology.
  1. any of the nonvertebrate chordates, as the tunicates, cephalochordates, and hemichordates.

Origin of protochordate

1890–95; < New Latin Protochordata name of the group; see proto-, chordate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for protochordate

protochordate

noun
  1. any chordate animal of the subphyla Hemichordata (acorn worms), Urochordata (tunicates), and Cephalochordata (lancelets)
adjective
  1. of or relating to protochordates
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012