melanocyte-stimulating hormone(redirected from Melanotropin)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Melanotropin: melatonin, Melanocyte stimulating hormone
melanocyte-stimulating hormone[mə′lan·ə‚sīt ¦stim·yə‚lād·iŋ ′hȯr‚mōn]
A protein substance secreted by the intermediate lobe of the pituitary of humans which causes dispersion of pigment granules in the skin; similar to intermedins in other vertebrates. Abbreviated MSH. Also known as melanophore-dilating principle; melanophore hormone.