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ascidian

[ uh-sid-ee-uhn ]
/ əˈsɪd i ən /
Zoology
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noun
any solitary or colonial tunicate of the class Ascidiacea, exhibiting in the larval stage the vertebrate characteristics of a notocord and hollow nerve cord.
adjective
belonging or pertaining to the class Ascidiacea.
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Origin of ascidian

1855–60; <New Latin Ascidi(um) a tunicate genus (see ascidium) + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use ascidian in a sentence

British Dictionary definitions for ascidian

ascidian
/ (əˈsɪdɪən) /

noun
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)
ascidian tadpole the free-swimming larva of an ascidian, having a tadpole-like tail containing the notochord and nerve cord
adjective
of, relating to, or belonging to the Ascidiacea
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
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