diptych /dipˈtik/

1. A pair of pictures, esp with a religious theme, painted on hinged wooden panels
2. A double-folding wooden writing tablet
3. A register of bishops, saints, etc read aloud during the Eucharist

• numerals
• numerary
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• numeric
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• numerical analysis
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• numeric keypad
• numeric keypads
• numerological
• numerologies
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• numerologists
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• numerosity