noun Plant Pathology.
a fungal disease of woody plants, characterized by thick, threadlike strands of mycelium on the undersides of the leaves and branches.
10 Commonly Misused WordsSome words have taken on incorrect meanings over time through consistent misuse. Make sure you're using the right word.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019