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Definition of pathological


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path·o·log·i·cal  audio  (pth-lj-kl) KEY   also path·o·log·ic   (-k) KEY  

ADJECTIVE:
  1. Of or relating to pathology.
  2. Relating to or caused by disease.
  3. Of, relating to, or manifesting behavior that is habitual, maladaptive, and compulsive: a pathological liar.


OTHER FORMS:
patho·logi·cal·ly (Adverb)


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The American Heritage® Dictionary of the English Language, Fourth Edition.
Copyright © 2000 by Houghton Mifflin Company.
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