单词 | protochordate |
释义 | Word Frequency protochordate(ˌprəʊtəʊˈkɔːdeɪt) noun 1. any chordate animal of the subphyla Hemichordata (acorn worms), Urochordata (tunicates), and Cephalochordata (lancelets) adjective 2. of or relating to protochordates |
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