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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.
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.
any harmful, depraved, or morbid condition, as of the mind or society: His fascination with executions is a disease.
decomposition of a material under special circumstances: tin disease.
to affect with disease; make ill.
Source: Dictionary.com
Disease - Wikipedia
A disease is a particular abnormal condition, a disorder of a structure or function, that affects part or all of an organism. The study of disease is called pathology ... More »
disease | Define disease at Dictionary.com
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Disease | Disease Definition by Merriam-Webster


Define disease: an illness that affects a person, animal, or plant : a condition that prevents the body or mind from working… — disease in a sentence.

Disease | Define Disease at Dictionary.com


Disease definition, a disordered or incorrectly functioning organ, part, structure, or system of the body resulting from the effect of genetic or developmental errors,  ...

What is a disease? - NCBI - National Institutes of Health


But a look through any medical dictionary soon shows that articulating a satisfactory definition of disease is surprisingly difficult. And it is not much help defining ...

disease - definition of disease in English | Oxford Dictionaries


a disorder of structure or function in a human, animal, o... Meaning, pronunciation , example sentences, and more from Oxford Dictionaries.

Disease - definition of disease by The Free Dictionary


An abnormal condition of a part, organ, or system of an organism resulting from various causes, such as infection, inflammation, environmental factors, or genetic  ...

Disease | definition of disease by Medical dictionary


a definite pathological process having a characteristic set of signs and symptoms. It may affect the whole body or any of its parts, and its etiology, pathology, and ...

Disease dictionary definition | disease defined - YourDictionary


The definition of a disease is an illness or sickness with specific, well-defined symptoms that affects a person, plant or animal. An example of a disease is cancer.