a form of hepatitis caused by an RNA virus, usually transmitted by contaminated food and water, and characterized by a shorter incubation period and milder symptoms than hepatitis B; infectious hepatitis
See hepatitis A in American Heritage Dictionary 4
noun
An infection of the liver that is caused by an RNA virus, is transmitted by ingestion of infected food and water, and has a shorter incubation and generally milder symptoms than hepatitis B. Also called infectious hepatitis.