Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “senior”


noun [C]     /ˈsiːniər/
someone in a high rank , or in a higher rank in relation to others , in an organization : You'll need to impress your seniors if you wish to be offered a permanent position .
→  senior citizen: Admission : $6 adults ; $4 seniors, students and children .
(Definition of senior noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of senior

Definitions of “senior” in other dictionaries

Word of the Day


the art and knowledge involved in preparing and eating good food

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