plural noun

: a large order of Euthyneura comprising marine gastropod mollusks having the gills when present posterior to the heart and having no operculum compare streptoneura see nudibranchia, tectibranchia
adjective or noun

Word History


New Latin, from opisth- + -branchia

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Dictionary Entries Near Opisthobranchia

Cite this Entry

“Opisthobranchia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Opisthobranchia. Accessed 13 Jun. 2024.

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