hepatitis

noun

hep·​a·​ti·​tis ˌhe-pə-ˈtī-təs 

plural hepatitides ˌhe-pə-ˈti-tə-ˌdēz  also hepatitises ˌhe-pə-ˈtī-tə-səz 

1

: inflammation of the liver

2

: a disease or condition (such as hepatitis A or hepatitis B) marked by inflammation of the liver

Did you know?

The liver, the body's largest gland, performs many important tasks, but is also vulnerable to many illnesses. At least five types of hepatitis, labeled with the letters A–E, are caused by viruses. The most common are hepatitis A, acquired through contaminated food and water; hepatitis B, which usually travels via sexual activity or shared needles; and hepatitis C, generally passed through shared needles. Some other types, including alcoholic hepatitis (caused by drinking too much alcohol), aren't infectious. There are vaccines for types A and B, and drug treatments for A, B, and C, though the drugs aren't always effective.

Examples of hepatitis in a Sentence

Recent Examples on the Web

If your doctor’s office is making mistakes, share the PrEP billing and coding guide from NASTAD, an association of public health officials who administer HIV and hepatitis programs. —Zach Dyer, Miami Herald, 6 Jan. 2026

Some of the vaccines and immunizations that are no longer universally recommended include RSV, flu and COVID, as well as the hepatitis and meningococcal vaccines. —Youri Benadjaoud, ABC News, 5 Jan. 2026

But Ladapo has begun to repeal rules requiring school kids to be protected against certain types of hepatitis, influenza, pneumonia, meningitis and chickenpox. —Sun Sentinel Editorial Board, Sun Sentinel, 3 Jan. 2026

Other babies should begin hepatitis B vaccination — if their parents want it — at 2 months of age, the CDC now recommends. —Helen Branswell, STAT, 2 Jan. 2026

Word History

Etymology

New Latin

First Known Use

circa 1751, in the meaning defined at sense 1

Phrases Containing hepatitis

• delta hepatitis
• hepatitis A
• hepatitis B
• hepatitis C
• hepatitis D
• hepatitis delta virus
• hepatitis D virus
• hepatitis E
• infectious hepatitis
• non-A, non-B hepatitis
• serum hepatitis

Rhymes for hepatitis

• adenitis
• arteritis
• blepharitis
• cervicitis
• cholangitis
• choroiditis
• decubitus
• dermatitis
• fasciitis
• gingivitis
• iritis
• keratitis

Kids Definition

hepatitis

noun

hep·​a·​ti·​tis ˌhep-ə-ˈtīt-əs 

plural hepatitides -ˈtit-ə-ˌdēz  also hepatitises

-ˈtīt-ə-səz

: inflammation of the liver

also : any of several virus diseases marked especially by inflammation of the liver

Medical Definition

hepatitis

noun

hep·​a·​ti·​tis ˌhep-ə-ˈtīt-əs 

plural hepatitides -ˈtit-ə-ˌdēz  also hepatitises

-ˈtīt-ə-səz

1

: inflammation of the liver

2

: a disease or condition (as hepatitis A or hepatitis B) marked by inflammation of the liver

hepatitic

-ˈtit-ik 

adjective