family Sphaerobolaceae fa·mi·lysp·haerobolaceae uncommon noun 1. monotypic family of fungi in which the more or less spherical gleba is forcibly ejected at maturity SynonymsSphaerobolaceaefamily Sphaerobolaceae Related words Broader terms fungus family Parts Nidulariales WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.