definition of
d

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

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

[3] #3 d n. [five hundred, 500, D] 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