ergocalciferol(redirected from ercalciol)
Also found in: Dictionary, Thesaurus.
vitamin D2; a sterol occurring naturally in fungi and some fish oils or synthesized from ergosterol, and similar to cholecalciferol in activity and metabolism; it is administered orally or added to food (e.g., milk) as a dietary source of vitamin D. It is also used in treatment of hypocalcemia, hypophosphatemia, rickets, and osteodystrophy associated with various medical conditions including chronic renal failure and hypoparathyroidism, administered orally, intramuscularly, or intravenously.
Activated ergosterol, the vitamin D of plant origin; it arises from ultraviolet irradiation of ergosterol, which is cleaved at the 9,10 bond and develops a double bond between C-10 and C-19; used in prophylaxis and treatment of vitamin D deficiency.
See vitamin D2.