| a fat-soluble, crystalline, unsaturated alcohol, C28H43OH, occurring in milk, fish-liver oils, etc., produced by ultraviolet irradiation of ergosterol, and used as a dietary supplement, as in fortified milk. Also called vitamin D2. |
cal·cif·er·ol (kāl-sĭf'ə-rôl', -rōl') n. See vitamin D2. [calcifer(ous) + -ol1.] |
| vitamin D2 n. A white crystalline compound, C28H44O, produced by ultraviolet irradiation of ergosterol. Also called calciferol, ergocalciferol. |
calciferol cal·cif·er·ol (kāl-sĭf'ə-rôl', -rōl')
n.
See vitamin D2.