English dictionary, thesaurus, translations & etymology
FreeDict.com
noun

conjunctivitis

kuhn-junk-tih-VY-tis
Quiz me More like this

Conjunctivitis (noun) means an inflammation of the conjunctiva, the membrane covering the front of the eye and the inside of the eyelids, often caused by infection. Example: “The doctor diagnosed conjunctivitis after examining her red, itchy eyes.”

noun
1
medical An inflammation of the conjunctiva, the membrane covering the front of the eye and the inside of the eyelids, often caused by infection.
"The doctor diagnosed conjunctivitis after examining her red, itchy eyes."
"Conjunctivitis can spread quickly among young children at school."
"He was given eye drops to treat his conjunctivitis."

How to use conjunctivitis

Learner’s notes

In plain EnglishAn eye infection that makes the eye red, itchy and inflamed.

When to use it

It is the formal medical term, while pinkeye is the everyday equivalent.

Memory tip

The plural forms are irregular, with conjunctivitides alongside conjunctivitises, so it is safest to keep the word uncountable in everyday use.

Trace the full origin ↓
Common pairings
develop conjunctivitis viral conjunctivitis a case of conjunctivitis treat conjunctivitis
Vocabulary Flow
Build your vocabulary from words like conjunctivitis.
Vocabulary Flow serves the next word, and the next — meaning, pronunciation and an example each time. Practice at your level, or learn English in your own language.
Start vocabulary practice
Test yourself on “conjunctivitis” A quick quiz — meaning, synonyms & usage →

Fill the gap

Can you complete this real example?

The doctor diagnosed _____ after examining her red, itchy eyes.

Etymology

The word is formed from conjunctiva, the name of the eye membrane, with the medical suffix -itis added to show inflammation.

Origin: English

pinkeye

Rhymes for conjunctivitis

See all rhymes for conjunctivitis →

Frequently asked questions

What causes conjunctivitis?
It is an inflammation of the conjunctiva that is often caused by infection.
Is conjunctivitis the same as pinkeye?
Yes, pinkeye is a common synonym for conjunctivitis.
Is conjunctivitis contagious?
Cases caused by infection can spread from person to person, which is why affected eyes should be treated and kept clean.
What is the meaning of conjunctivitis?
"conjunctivitis" (noun) means an inflammation of the conjunctiva, the membrane covering the front of the eye and the inside of the eyelids, often caused by infection.
Definitions: FreeDict original editorial