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单词 ascidian
释义

WordReference Random House Unabridged Dictionary of American English © 2024
as•cid•i•an  (ə sidē ən),USA pronunciation [Zool.]
n. 
  1. Zoologyany solitary or colonial tunicate of the class Ascidiacea, exhibiting in the larval stage the vertebrate characteristics of a notocord and hollow nerve cord.

adj. 
  1. Zoologybelonging or pertaining to the class Ascidiacea.
  • Neo-Latin Ascidi(um) a tunicate genus (see ascidium) + -an
  • 1855–60

Collins Concise English Dictionary © HarperCollins Publishers::
ascidian /əˈsɪdɪən/ n
  1. any minute marine invertebrate animal of the class Ascidiacea, such as the sea squirt, the adults of which are degenerate and sedentary: subphylum Tunicata (tunicates)
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