chemical

chemical definition - medical

chem·i·cal (kĕmˈĭ-kəl)

adjective Abbr. chem.
  1. Of or relating to chemistry.
  2. Of or relating to the properties or actions of chemicals.
noun
  1. A substance with a distinct molecular composition that is produced by or used in a chemical process.
  2. A drug, especially an illicit or addictive one.

Related Forms:

  • chemˈi·cal·ly adverb

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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