Saigon cinnamon sai·gon·cin·namon uncommon noun 1. tropical southeast Asian tree with aromatic bark; yields a bark used medicinally SynonymsSaigon cinnamonCinnamomum loureirii Related words Broader terms laurel Parts Cinnamomum Part of cinnamon bark WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.