7-dehydrocholesterol
[ -dē-hī′drō-kə-lĕs′tə-rôl′, -rōl′ ]
n.
A provitamin present in the skin of humans as well as the milk of mammals that becomes vitamin D3 when exposed to ultraviolet light.
Words nearby 7-dehydrocholesterol
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.