definition of
[D]

[1] #1 D n. [vitamin D, calciferol, viosterol, ergocalciferol, cholecalciferol] a fat-soluble vitamin that prevents rickets. wn

[2] #2 D s. [five hundred, 500, d] denoting a quantity consisting of 500 items or units. wn

[3] #3 D n. [five hundred, 500] the cardinal number that is the product of one hundred and five. wn

[4] #4 D n. [d] the 4th letter of the Roman alphabet. wn

[5] #5 D n. [d] the 4th letter of the Roman alphabet. wn