genus Origanum ge·nu·so·riganum uncommon noun 1. a genus of aromatic mints of the family Labiatae Synonymsgenus Origanum Related words Broader terms asterid dicot genus Parts Labiatae Part of origanumoreganosweet marjoramdittany of crete WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.