hep ‧ a ‧ ti ‧ tis /ˌhepəˈtaɪtəs◂, ˌhepəˈtaɪtɪs◂/ BrE AmE noun [uncountable]
a disease of the ↑ liver that causes fever and makes your skin yellow. There are several types of hepatitis: hepatitis A, which is less severe, and hepatitis B and C, which are much more serious.