peronospora destructor peronosporaceous • peronospora hyoscyami · · · Info · Definitions · Synonyms · Characters · · peronospora destructor · · Text Common · · Latin · · Scripts 22 · · Length 8 · · Syllables Definitions · · · (noun) fungus causing a downy mildew on onions. Synonyms: onion mildew, Peronospora destructor. · · Noun Definition 1 Synonyms · · · onion mildew · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075