Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

chronic fatigue syndrome

noun [U]
 
 
(UK also ME)

Definition

an illness, sometimes lasting for several years, in which a person's muscles and joints (= places where two bones are connected) hurt and they are generally very tiredDisorders of muscles and the nervous system
(Definition of chronic fatigue syndrome noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“chronic fatigue syndrome” in other dictionaries

Word of the Day

throw caution to the wind/winds

to do something without worrying about the risk or negative results

Word of the Day

Blog

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