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Definition of disease:

  1. An alteration in the state of the body or of some of its organs, interrupting or disturbing the performance of the vital functions, and causing or threatening pain and weakness; malady; affection; illness; sickness; disorder; -- applied figuratively to the mind, to the moral character and habits, to institutions, the state, etc.
  2. Lack of ease; uneasiness; trouble; vexation; disquiet.
  3. To deprive of ease; to disquiet; to trouble; to distress.
  4. To derange the vital functions of; to afflict with disease or sickness; to disorder; - used almost exclusively in the participle diseased.


insanity, visitation, plague, nervous disorder, spell, complex, distemper, pathological case, contagion, unsoundness, pathological condition, ill, epidemic, health, seizure, symptomatology, temperature, affliction, psychosomatic illness, morbidity, functional disorder.

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