noun
1. : either of two parasitic fungi attacking the hop:
a. : a powdery mildew ( Sphaerotheca humuli )
b. : a downy mildew ( Peronoplasmopara humuli )
2. : disease of hops caused by a hop mildew
noun
1. : either of two parasitic fungi attacking the hop:
a. : a powdery mildew ( Sphaerotheca humuli )
b. : a downy mildew ( Peronoplasmopara humuli )
2. : disease of hops caused by a hop mildew
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012