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1. The 4th letter of the Roman alphabet
   - D

1. Denoting a quantity consisting of 500 items or units
   - five hundred, 500

1. A fat-soluble vitamin that prevents rickets
   - vitamin D, calciferol, viosterol, ergocalciferol, cholecalciferol
    
2. The cardinal number that is the product of one hundred and five
   - five hundred, 500

Derived forms: ds, Ds

See also: cardinal

Type of: alphabetic character, fat-soluble vitamin, large integer, letter, letter of the alphabet

Part of: Latin alphabet, Roman alphabet

Encyclopedia: D, Asher