bitter orange tree bit·te·ro·rangetree uncommon noun 1. any of various common orange trees yielding sour or bitter fruit; used as grafting stock Synonymssour orangeSeville orangebitter orangebitter orange treebigarademarmalade orangeCitrus aurantium Related words Broader terms orange Parts genus Citrus Part of bitter orange WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
