hə̇ˌstirēˈāsēˌē noun plural
Usage: capitalized
Etymology: New Latin, from Hysterium, type genus (from Greek hystera womb + New Latin -ium ) + -aceae
: a family of ascomycetous fungi (order Hysteriales) that is often considered to be derived from the family Sphaeriaceae from which it is distinguished chiefly by the form and method of opening of the ascomata of its members