from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various fungi, especially of the family Erysiphaceae, that produce powdery conidia on the host surface.
- n. A plant disease caused by any of these fungi.
from the GNU version of the Collaborative International Dictionary of English
- n. a fungal disease of plants caused by an ascomycete of the order Erysiphales, characterized by a powdery white film on the surface of the affected plants. It is damaging to, e.g., roses and lilacs. Also, a fungus that causes such a disease.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of various fungi of the genus Erysiphe producing powdery conidia on the host surface
Sorry, no etymologies found.