Quamassia qua·mas·sia uncommon noun 1. genus of scapose herbs of North and South America having large edible bulbs SynonymsCamassiagenus Camassiagenus Quamassia Related words Broader terms liliid monocot genus Parts Liliaceae Part of camascommon camasLeichtlin's camaswild hyacinth WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.