齐桓公 Traditional form: 齊桓公 Pinyin (reading): Qí Huángōng Definitions: Duke Huan of Qi (reigned 685-643 BC), one of the Five Hegemons 春秋五霸 Characters: 齐 - even, uniform, of equal length 桓 - variety of tree; surname 公 - fair, equitable; public; duke Traditional characters: 齊 - even, uniform, of equal length 桓 - variety of tree; surname 公 - fair, equitable; public; duke