A disorder of structure or function in a human, animal, or plant, especially one that produces specific symptoms or that affects a specific location and is not simply a direct result of physical injury. https://www.oxforddictionaries.com › definition › english › disease

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. https://www.dictionary.com/browse/disease

a condition of the living animal or plant body or of one of its parts that impairs normal functioning and is typically manifested by distinguishing signs and symptoms. https://www.merriam-webster.com/dictionary/disease

What is a disease? https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1299105/pdf/5-7400195.pdf