pitahaya cactus pi·ta·haya·cactus uncommon noun 1. cactus of the southwestern United States and northern Mexico having edible juicy fruit Synonymspitahaya cactuspitahayaAcanthocereus tetragonusAcanthocereus pentagonus Related words Broader terms cactus Part of pitahaya WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
