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- DictionaryDis·ease/dəˈzēz/
noun
- 1. a disorder of structure or function in a human, animal, or plant, especially one that has a known cause and a distinctive group of symptoms, signs, or anatomical changes: "bacterial meningitis is a rare disease"
A disease is a particular abnormal condition that adversely affects the structure or function of all or part of an organism and is not immediately due to any external injury. Diseases are often known to be medical conditions that are associated with specific signs and symptoms.
Disease definition: 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..
a condition of a person, animal, or plant in which its body or structure is harmed because an organ or part is unable to work as it usually does; an illness: [ C ] Mumps is an infectious disease. [ U ] He suffers from heart disease. [ U ] Hundreds of thousands of trees died from Dutch elm disease.
[uncountable, countable] an illness affecting humans, animals or plants, often caused by infection. heart/lung/liver disease. In 19th century England, infectious diseases were the principal cause of death. chronic diseases such as obesity and diabetes. health measures to prevent the spread of disease. Smoking increases the risk of heart disease.
DISEASE meaning: 1 : an illness that affects a person, animal, or plant a condition that prevents the body or mind from working normally; 2 : a problem that a person, group, organization, or society has and cannot stop.
Thesaurus. See disease in the Oxford Advanced Learner's Dictionary. Check pronunciation: disease. Definition of disease noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
B1. an illness caused by an infection or by a failure of health and not by an accident: heart disease. an infectious disease. Fewer examples. an incurable disease. Eating fatty food increases the risk of heart disease. The disease affects both humans and animals. As many as 6000 people may have been infected with the disease.
