noun Per·o·nos·po·ra \ˌperəˈnäspərə\

Definition of Peronospora

  1. :  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

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Origin and Etymology of peronospora

New Latin, from perono- + -spora

Seen and Heard

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a rounded knoll or a ridge of ice

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