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1. An orange tree (Citrus aurantium) that is widely cultivated in warm regions and has reddish-orange, highly acidic fruit.
2. The fruit of this tree. In both senses also called bigarade, Seville orange, sour orange.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Plants) another name for Seville orange
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||bitter orange - any of various common orange trees yielding sour or bitter fruit; used as grafting stock|
genus Citrus - orange; lemon; lime; etc.
|2.||bitter orange - highly acidic orange used especially in marmalade|
orange - round yellow to orange fruit of any of several citrus trees
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