A zairja (Arabic: زايرجة; also transcribed as zairjah, zairajah, zairdja, zairadja, and zayirga) was a device used by medieval Arab astrologers to generate ideas by mechanical means. The name may derive from a mixture of the Persian words zāycha (Persian: زايچه "horoscope; astronomical table") and dāyra (دایره "circle").
A zairja (Arabic: زايرجة; also transcribed as zairjah, zairajah, zairdja, zairadja, and zayirga) was a device used by medieval Arab astrologers to generate ideas by mechanical means. The name may derive from a mixture of the Persian words zāycha (Persian: زايچه "horoscope; astronomical table") and dāyra (دایره "circle").
Source: Wikipedia "Zairja" · CC BY-SA 4.0
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