(ir'i-din), 1. Irigenin 7-glucoside from orris root, Iris florentina. 2. A resinoid from blue flag, Iris versicolor; used as a cholagogue and cathartic. Synonym(s): irisin
irisin
(ī′rĭs-ĭn) [Gr. Iris, rainbow, and the Gr goddess who was messenger of the Olympian gods + -in] A hormone released by active muscle cells that converts metabolically inactive white fat to brown fat.