周髀 zhōubì Zhou Bi Suan Jing Definitions Defs Origin Strokes Stroke Words Sentences Sents 周 zhōu Zhou Dynasty the Zhou Dynasty (c. 1046-256 BC); the Later Zhou Dynasty (951-960 AD)髀 bì gnomon (bound form) a gnomon or pillar used in ancient times to measure the shadow of the sun to determine time and seasons, as mentioned in the 周髀算经 zhōubìsuànjīng