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psoralen

[sawr-uh-luh n, sohr-]
noun Pharmacology.
  1. a toxic substance, C11H6O3, found in certain plants, including parsnips, used to increase the response to ultraviolet light in the treatment of severe cases of acne and psoriasis.
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Origin of psoralen

1930–35; < New Latin Psoral(ea) name of a genus of plants yielding the compound (< Greek psōraléa, neuter plural of psōraléos mangy, in reference to the glandular dots on the plant; see psoriasis) + -en, variant of -ene
Also called furocoumarin.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

psoralen in Medicine

psoralen

(sôrə-lən)
n.
  1. Any of a group of chemical compounds found naturally in certain plants that are used in the treatment of psoriasis and vitiligo.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.