- a decay of wood caused by lignase-producing fungi, especially Phanerochaete chrysosporium.
- a fungal disease of onions and related plants caused by Sclerotinia cepivorum.
- any of the several fungi causing white rot.
Origin of white rot
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019