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: a genus (coextensive with the family Pyrosomatidae of the class Ascidiacea) of chiefly tropical free-swimming brilliantly bioluminescent pelagic compound tunicates whose colony forms a hollow cylinder that is closed at one end and is often several feet long


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taxonomic synonym of babesia

Word History



New Latin, from pyr- + -soma

New Latin, from pyr- + -soma

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Dictionary Entries Near Pyrosoma

Cite this Entry

“Pyrosoma.” Dictionary, Merriam-Webster, Accessed 15 Apr. 2024.

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