Eriodictyon erio·dic·tyon uncommon noun 1. small genus of evergreen shrubs of southwestern United States and Mexico Synonymsgenus Eriodictyon Related words Word family Eriodictyon californicum Broader terms asterid dicot genus Parts Hydrophyllaceae Part of yerba santa WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.