: one of the sense organs situated on the margin of the umbrella of many jellyfishes, consisting of a greatly modified and reduced tentacle containing a cavity with lithites, and often being sunk in a pit or enclosed in a pouch

Word History


New Latin tentaculum + -o- + English cyst

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Dictionary Entries Near tentaculocyst

Cite this Entry

“Tentaculocyst.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tentaculocyst. Accessed 19 May. 2024.

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