family Erysiphaceae fa·mi·lye·rysiphaceae uncommon noun 1. any of several resinous trees or shrubs often burned for light SynonymsErysiphaceaefamily Erysiphaceae Related words Broader terms fungus family Parts Erysiphales Part of Erysiphe WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.