negative

negative definition - medical

neg·a·tive (nĕgˈə-tĭv)

adjective
  1. Expressing, containing, or consisting of a negation, refusal, or denial.
  2. Marked by failure of response or absence of a reaction.
  3. Not indicating the presence of microorganisms, disease, or a specific condition.
  4. Moving or turning away from a stimulus, such as light.
  5. Relating to or designating an electric charge of the same sign as that of an electron.

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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