Castanospermum cas·ta·nos·permum uncommon noun 1. a rosid dicot genus of the subfamily Papilionoideae having one species: Moreton Bay chestnut Synonymsgenus Castanospermum Related words Broader terms rosid dicot genus Parts Papilionoideae Part of Moreton Bay chestnut WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
