An astronomical text tabulating information on the apparent positions and motions of the sun, moon, planets, and stars, especially such a text written in Arabic or Persian in the eighth or ninth century.
[Arabic and Persian zīj (Persian, from Arabic), from Persian zīg, mason's rule, threads that serve as a guide in embroidering, zij, from Middle Persian ǰīg, *zīg, thread, from Old Iranian *ǰyaka-, thread, diminutive of *ǰyā-, bowstring, tendon; akin to Avestan ǰyā-; see gwhī- in the Appendix of Indo-European roots.]
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