noun
1. : a destructive disease of potato tubers caused by a fungus ( Phytophtora erythroseptica ) characterized by a wet rot and pinkish color of the cut tuber surfaces when exposed to the air
2. : a rot of apples caused by a saprophytic fungus ( Tricothecium roseum )
3. : a watery soft rot of celery caused by a fungus ( Sclerotinia sclerotiorum )