The noun has 3 meanings:
Meaning #1:
a fat-soluble vitamin that prevents rickets
Synonyms: vitamin D, calciferol, viosterol, ergocalciferol, cholecarciferol
Meaning #2:
the cardinal number that is the product of one hundred and five
Synonyms: five hundred, 500
Meaning #3:
the 4th letter of the Roman alphabet
