Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “Chronic Fatigue Syndrome”

Chronic Fatigue Syndrome

noun [U]  /ˈkrɑn·ɪk fəˈtiɡ ˌsɪn·droʊm/ us  
a group of illnesses that cause people to be extremely tired
(Definition of Chronic Fatigue Syndrome from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of Chronic Fatigue Syndrome?
Add Cambridge dictionaries to your browser to your website

Definitions of “Chronic Fatigue Syndrome” in other dictionaries

Translations of “Chronic Fatigue Syndrome”

Word of the Day

beer mat

a small piece of cardboard that you put under a glass to protect a table surface in a pub or bar

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More