melanogen

[ mĕ-lănə-jən, -jĕn′, mĕlə-nō-jĕn′ ]

n.

A colorless precursor of melanin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.