With reference to the geocentric astronomy of Ptolemy: a circle or circular orbit having the earth as its centre. rare and historical.
| 单词 | θ226 | 
| 释义 | the world > the universe > heavenly body > movement of heavenly bodies > 			[noun]		 > movement in orbit > orbit > centric (1)		 centric1667 With reference to the geocentric astronomy of Ptolemy: a circle or circular orbit having the earth as its centre. rare and historical. | 
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