Vitamin-d
noun
1.
any of the several fat-soluble, antirachitic vitamins D 1 , D 2 , D 3 , occurring in milk and fish-liver oils, especially cod and halibut, or obtained by irradiating provitamin D with ultraviolet light, essential for the formation of normal bones and teeth.
noun
1.
a mixture of lumisterol and calciferol, obtained by ultraviolet irradiation of ergosterol.
noun
1.
calciferol.
noun
1.
a D vitamin, C 27 H 43 OH, occurring in fish-liver oils, that differs from vitamin D 2 by slight structural differences in the molecule.
noun (pl) D vitamins
1.
any of the fat-soluble vitamins, including calciferol and cholecalciferol, occurring in fish-liver oils (esp cod-liver oil), milk, butter, and eggs: used in the treatment of rickets and osteomalacia
noun
1.
the first isolated form of vitamin D, consisting of calciferol and its precursor, lumisterol
noun
1.
another name for calciferol
noun
1.
another name for cholecalciferol
vitamin D n.
A fat-soluble vitamin occurring in several forms, especially vitamin D2 or vitamin D3, required for normal growth of teeth and bones, and produced in general by ultraviolet irradiation of sterols found in milk, fish, and eggs.
vitamin D2 n.
A white crystalline compound produced by ultraviolet irradiation of ergosterol. Also called calciferol, ergocalciferol.
vitamin D3 n.
A colorless crystalline compound found in fish-liver oils, irradiated milk, and all irradiated animal foodstuffs and having biological activity similar to vitamin D2. Also called cholecalciferol.
vitamin D
Any of a group of fat-soluble sterols necessary for normal bone growth, especially vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). Vitamin D is found in milk, fish, and eggs and can be produced in the skin on exposure to sunlight. A deficiency of vitamin D in the diet causes rickets in children.
vitamin D2
A white crystalline sterol produced by ultraviolet irradiation of ergosterol and also occurring naturally in fungi and some fish oils. Vitamin D2 is the form of vitamin D generally used as a dietary supplement. Also called calciferol, ergocalciferol. Chemical formula: C28H44O.
vitamin D3
A colorless, crystalline steroid hormone that the body synthesizes in the skin when its precursor, a derivative of cholesterol, is irradiated by sunlight. Vitamin D3 is also found in fish-liver oils, irradiated milk, and all irradiated animal foodstuffs. Also called calciferol, cholecalciferol. Chemical formula: C27H44O.
Read Also:
- Vitamin-d1
noun 1. a mixture of lumisterol and calciferol, obtained by ultraviolet irradiation of ergosterol. noun 1. the first isolated form of vitamin D, consisting of calciferol and its precursor, lumisterol
- Vitamin d milk
vitamin D milk n. Cow’s milk that has had vitamin D added to it.
- Vitamin d-resistant rickets
vitamin D-resistant rickets n. An inherited form of rickets characterized by high concentrations of phosphate in the blood due to defective renal tubular reabsorption of phosphate and subnormal absorption of dietary calcium. Also called X-linked hypophosphatemic osteomalacia.
- Vitamin-e
noun 1. a pale-yellow viscous fluid, abundant in vegetable oils, whole-grain cereals, butter, and eggs, and important as an antioxidant in the deactivation of free radicals and in maintenance of the body’s cell membranes: deficiency is rare. noun 1. another name for tocopherol vitamin E n. A fat-soluble vitamin found chiefly in plant leaves, wheat […]
- Vitamin-g
noun 1. riboflavin. noun 1. a former name (esp US and Canadian) for riboflavin vitamin G n. Riboflavin.