mononucleosis

noun [U]

/ˌmɑn·əˌnu·kliˈoʊ·sɪs/ (short form mono)

Definition

› a disease that causes a sudden fever, swelling of organs that produce white blood cells, and a sore throat, and which can make a person feel weak and ill for a long time

(Definition of mononucleosis noun from the Cambridge Academic Content Dictionary © Cambridge University Press)

Focus on the pronunciation of mononucleosis

Our dictionaries

Browse the Thesaurus

“mononucleosis” in other dictionaries

Browse the Dictionary

Word of the Day

jettison

to get rid of something or someone that is not wanted or needed

Word of the Day ►

Blog

Read our blog about how the English language behaves.

New Words

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