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ascidian

noun
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as·​cid·​i·​an | \ ə-ˈsi-dē-ən How to pronounce ascidian (audio) \

Definition of ascidian

: any of a class (Ascidiacea) of solitary or colonial sessile tunicates having an incurrent and excurrent siphon

— called also sea squirt

First Known Use of ascidian

1823, in the meaning defined above

History and Etymology for ascidian

New Latin Ascidia, group comprising tunicates, from Ascidium, genus name, from Greek askidion, diminutive of askos wineskin, bladder

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The first known use of ascidian was in 1823

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Dictionary Entries Near ascidian

Ascidiae

ascidian

ascidiarium

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Cite this Entry

“Ascidian.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ascidian. Accessed 17 Oct. 2021.

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More from Merriam-Webster on ascidian

Britannica.com: Encyclopedia article about ascidian

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