Divination or fortune-telling using knucklebones or dice, practiced in ancient cultures.
From astragalos (knucklebone, often used as dice) plus Greek -manteia (divination), creating a term for prediction through bones—similar to how tarot or runes work.
Ancient Greeks, Romans, and Near Eastern peoples genuinely believed they could predict the future by throwing knucklebones—it's basically ancient dice divination, and 'astragalomncy' is its fancy name!
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