hepatitis B

noun

: an acute or chronic hepatitis that is caused by a DNA virus (Orthohepadnavirus hominoidei of the family Hepadnaviridae), is marked chiefly by fatigue, fever, nausea, vomiting, abdominal pain, darkened urine, jaundice, and joint pain but may be asymptomatic, and is transmitted especially by contact with infected blood (as by transfusion or by sharing contaminated needles in illicit intravenous drug use) or by contact with other infected bodily fluids (such as semen)

Note: The acute form of hepatitis B, a mild illness lasting several weeks to months, may progress to long-term or chronic infection often leading to liver damage, liver failure, or liver cancer.

called also serum hepatitis

Examples of hepatitis B in a Sentence

Recent Examples on the Web

In addition to the requirements in law, the Florida Department of Health has vaccination requirements for hepatitis B; varicella, commonly known as chickenpox; Haemophilus influenza type b, or Hib, which can cause meningitis; and pneumococcal conjugate, which can cause pneumonia and meningitis. —Jim Saunders, Sun Sentinel, 27 Jan. 2026

Interferon-alpha is already being used to treat conditions like chronic hepatitis B and C, hairy cell leukemia, Kaposi sarcoma, Non-Hodgkin lymphoma, renal cell carcinoma, melanomas and genital warts. —Bruce Y. Lee, Forbes.com, 24 Jan. 2026

Compared to western countries, the disease is much more prevalent in undervaccinated places like Guinea-Bissau where about 19% suffer from chronic hepatitis B infections, meaning that infants taking part in the study are at excessive risk for infection and death. —Rafael Perez, Oc Register, 22 Jan. 2026

The idea is not to test whether the hepatitis B vaccine works against hepatitis B. —Gabrielle Emanuel, NPR, 22 Jan. 2026

Word History

First Known Use

1971, in the meaning defined above

Rhymes for hepatitis B

• actuary
• antiquary
• bolsheviki
• calliope
• chelicerae
• covenantee
• cruciferae
• diastole
• distributee
• hyperbole
• interviewee
• origami

Medical Definition

hepatitis B

noun

-ˈbē 

: an acute or chronic hepatitis that is caused by a double-stranded DNA virus (Orthohepadnavirus hominoidei of the family Hepadnaviridae), is marked chiefly by fatigue, fever, nausea, vomiting, abdominal pain, darkened urine, jaundice, and joint pain but may be asymptomatic, and is transmitted especially by contact with infected blood (as by transfusion or by sharing contaminated needles in illicit intravenous drug use) or by contact with other infected body fluids (such as semen)

Note: The acute form of hepatitis B, a mild illness lasting several weeks to months, may progress to long-term or chronic infection often leading to liver damage, liver failure, or liver cancer.

called also homologous serum hepatitis, homologous serum jaundice, serum hepatitis