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单词 protochordate
释义

Definition of protochordate in English:

protochordate

noun ˌprəʊtə(ʊ)ˈkɔːdeɪtˌprəʊtə(ʊ)ˈkɔːdət
Zoology
  • Any of the small marine animals belonging to the phylum Hemichordata or to either of the chordate subphyla Urochordata and Cephalochordata, characterized (at some point in the life cycle) by a hollow dorsal nerve cord, a notochord, and gill slits; a hemichordate, urochordate, or cephalochordate, or a hypothetical ancestral form of any of these.

adjective ˌprəʊtə(ʊ)ˈkɔːdeɪtˌprəʊtə(ʊ)ˈkɔːdət
Zoology
  • Of or designating a protochordate.

Origin

Late 19th century. From proto- + chordate, after scientific Latin Protochordata, former group name.

 
 

Definition of protochordate in US English:

protochordate

noun
Zoology
  • Any of the small marine animals belonging to the phylum Hemichordata or to either of the chordate subphyla Urochordata and Cephalochordata, characterized (at some point in the life cycle) by a hollow dorsal nerve cord, a notochord, and gill slits; a hemichordate, urochordate, or cephalochordate, or a hypothetical ancestral form of any of these.

adjective
Zoology
  • Of or designating a protochordate.

Origin

Late 19th century. From proto- + chordate, after scientific Latin Protochordata, former group name.

 
 
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更新时间:2025/2/26 4:18:44