the fungus Botrytis cinerea, which is cultivated in some winemaking processes, especially in the making of French Sauternes, where the ripened grapes become shriveled as a result of its introduction, thereby concentrating the juice and increasing the sugar content.
Origin of noble rot
First recorded in 1920–25
Also called noble mold.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
winemaking a condition in which grapes are deliberately affected by Botrytis cinerea, resulting in the shrivelling of the ripened grapes, which in turn leads to an increased sugar content
Word Origin for noble rot
C20: translation of French pourriture noble
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012