Myrtaceae myr·ta·ceae uncommon noun 1. trees and shrubs yielding a fragrant oil Synonymsfamily Myrtaceaemyrtle family Related words Broader terms dicot family Parts Myrtales Part of myrtaceous treeMyrtusPimentaEugeniagenus FeijoaJambosMyrciariaPsidium WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.