: a genus (the type of the family Peronosporaceae) of destructive downy mildews having the sporangiophores dichotomously branched and with pointed tips see onion mildew, tobacco blue mold

Word History


New Latin, from perono- + -spora

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Dictionary Entries Near Peronospora

Cite this Entry

“Peronospora.” Dictionary, Merriam-Webster, Accessed 29 Feb. 2024.

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