plural noun

in some classifications
: a family comprising monocotyledonous aquatic herbs (order Naiadales) that are distinguished by having flowers with the tube of the perianth more or less adnate to the ovary and the carpels united in fruit and that are now usually included in Hydrocharitaceae

Word History


New Latin Vallisneria, type genus + -aceae

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Dictionary Entries Near Vallisneriaceae

Cite this Entry

“Vallisneriaceae.” Dictionary, Merriam-Webster, Accessed 6 Jun. 2023.

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