ˌerəsəˈfāsēˌē noun plural
Usage: capitalized
Etymology: New Latin, from Erysiphe, type genus + -aceae
: a family of fungi (order Erysiphales) comprising the powdery mildews, being parasitic mostly on leaves, and having delicate hyaline superficial mycelium and perithecia with one to several asci and distinctive appendages
• er·y·si·pha·ceous | ̷ ̷ ̷ ̷ ̷ ̷|fāshəs adjective