First Known Use: 1835
Dictionary
ascidian
noun as·cid·i·an \ə-ˈsi-dē-ən\
Definition of ASCIDIAN
: any of a class (Ascidiacea) of solitary or colonial sessile tunicates having an incurrent and excurrent siphon —called also sea squirt
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Origin of ASCIDIAN
New Latin Ascidia, group comprising tunicates, from Ascidium, genus name, from Greek askidion, diminutive of askos wineskin, bladder
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