- 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.
- any departure from health; illness in general
- a particular destructive process in an organ or organism, with a specific cause and characteristic symptoms; specif., an illness; ailment
- any harmful or destructive condition, as of society
Origin of diseaseMiddle English disese, inconvenience, trouble, sickness ; from Old French desaise, discomfort ; from des-, dis- + aise, ease
- An abnormal condition of a part, organ, or system of an organism resulting from various causes, such as infection, inflammation, environmental factors, or genetic defect, and characterized by an identifiable group of signs, symptoms, or both.
- A condition or tendency, as of society, regarded as abnormal and harmful.
- Obsolete Lack of ease; trouble.
Origin of diseaseMiddle English disese, from Old French : des-, dis- + aise, ease; see ease.
- (pathology) An abnormal condition of the body or mind that causes discomfort or dysfunction; distinct from injury insofar as the latter is usually instantaneously acquired.
- The tomato plants had some kind of disease that left their leaves splotchy and fruit withered.
- (by extension) Any abnormal or harmful condition, as of society, people's attitudes, way of living etc.
- Lack of ease; uneasiness; trouble; vexation; disquiet.
(third-person singular simple present diseases, present participle diseasing, simple past and past participle diseased)
- 1590, Edmund Spenser, The Faerie Queene, II.ii:
- mote he soft himselfe appease, / And fairely fare on foot, how euer loth; / His double burden did him sore disease.
- To infect with a disease.