What does meningitis mean?
Meningitis is the medical term for inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It is not simply another name for a brain infection; its underlying meaning is broader and includes inflammation caused by infection as well as other processes. Bacterial and viral meningitis are among the most familiar forms, while the term also covers less common inflammatory causes. The condition can produce severe headache, fever, neck stiffness, altered mental status, and, in urgent cases, life-threatening complications. Symptoms may resemble other illnesses, so suspected meningitis warrants prompt medical evaluation rather than a home diagnosis. Meningitis matters beyond its medical definition: vaccination, early recognition, and public-health measures can prevent or limit serious outbreaks. The word is therefore both a precise name for a potentially dangerous condition and a reminder that anatomical location and underlying cause often determine how a disease is understood and treated.
nounInflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It may result from infection or other causes and can be a potentially life-threatening condition.
- An inflammatory disease of the meninges, especially one caused by an infection of the brain or spinal cord.
"Severe headaches and a stiff neck can be warning signs of meningitis."
"Laboratory tests confirmed that the patient had bacterial meningitis."
"Public-health officials issued guidance after a cluster of viral meningitis cases was reported."
The plural is uncommon. In general writing, writers often use the unchanged noun with a plural determiner, as in “cases of meningitis.”
"Meningitides caused by pneumococcal infection can progress rapidly."
The name is anatomically precise: meningitis means inflammation of the brain and spinal cord's protective membranes, the meninges, rather than necessarily of the brain tissue itself.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does meningitis come from?
The English medical term comes through New Latin, where it was formed using the Greek root for the meninges together with the Greek-derived suffix meaning inflammation. The underlying Greek words meninx and meninges referred to a membrane, especially the protective membranes around the brain and spinal cord. Related forms such as meningeal, meningioma, and meninx preserve the same anatomical root.
How meningitis is actually used
This is a formal medical term used in clinical and public-health contexts. It is also commonly used more narrowly for infections of the meninges, even though inflammation can have causes other than infection.
Easily confused with meningitis
A meningioma is a tumor arising from the meninges, whereas meningitis is inflammation of those membranes.