1. Noun. cholecalciferol; a constituent of vitamin D. ¹
¹ Source: wiktionary.com
Medical Definition of Vitamin D3
1. The vitamin produced by the body when exposed to ultraviolet light. It has an important role in calcium and phosphorus metabolism.
Deficiency is known as rickets which presents with soft (weak) and bendable bones, stunted growth, bow legs, chest deformities and knock-knees.
(15 Jan 1998)
