family Sphaeriaceae fa·mi·lysp·haeriaceae uncommon noun 1. parasitic fungi having globose and sometimes necked or beaked perithecia SynonymsSphaeriaceaefamily Sphaeriaceae Related words Broader terms fungus family Parts Sphaeriales Part of Neurospora WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.