Dictionary
me•thox•sa•len
Pronunciation: (me-thok'su-lun), [key]—
n. Pharm.
a potent compound, C
12H
8O
4, derived from the seeds of the plant
Ammi majus: used in combination with certain ultraviolet radiation for the treatment of severe psoriasis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.