Clusiaceae clu·sia·ceae uncommon noun 1. widely distributed family of chiefly tropical trees and shrubs and vines that produce oils and resins and some usable timber SynonymsGuttiferaefamily Guttiferaefamily ClusiaceaeSt John's wort family Related words Broader terms dilleniid dicot family Parts Parietales Part of Calophyllumgenus ClusiaGarciniaHypericumMammeaMesua WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.