dis·ease
noun 1. a
disordered or
incorrectly functioning organ, part,
structure, or system of the body resulting from the
effect of genetic
or developmental errors,
infection, poisons, nutritional deficiency or imbalance, toxicity, or
unfavorable environmental factors; illness; sickness; ailment.
2. any abnormal condition in a
plant that interferes with its vital physiological processes, caused by pathogenic microorganisms,
parasites, unfavorable environmental, genetic, or nutritional factors, etc.
Disease | Define Disease at Dictionary.com
disease /dis·ease/ (dĭ-zēz´) any deviation from or interruption of the normal structure or function of any body part, organ, or system that is manifested by a characteristic set of symptoms and signs and whose etiology, pathology, and prognosis may be known or unknown. See also entries under
syndrome.
disease - definition of disease in the Medical dictionary - by the Free Online Medical Dictionary, Thesaurus and Encyclopedia.