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D, vitamin D, calciferol, viosterol, ergocalciferol, cholecalciferol | a fat-soluble vitamin that prevents rickets | |
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D, d | the 4th letter of the Roman alphabet | |
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five hundred, D, 500 | the cardinal number that is the product of one hundred and five | |
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500, five hundred, d | denoting a quantity consisting of 500 items or units |