Acidosis is a condition in which there is too much acid (or too little base) in the blood. Acidosis is not a disease but rather a result of a variety of disorders. It is associated with some forms of diabetes, lung disease, and severe kidney disease.
Reference:
AMA: https://www.ama-assn.org/
Merck Manuals: https://www.merckmanuals.com/home/hormonal-and-metabolic-disorders/acid-base-balance/overview-of-acid-base-balance
Medline Plus: https://medlineplus.gov/ency/article/001181.htm