Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “CEO”


noun [C]     /ˌsiː.iːˈəʊ/ US  /-ˈoʊ/
abbreviation for chief executive officer: the person with the most important position in a companyBosses, managers and directorsPeople in charge of or controlling other people
(Definition of CEO noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of CEO

Definitions of “CEO” in other dictionaries

Word of the Day


If you crew a boat, or crew for someone on their boat, you help to sail it.

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