Meaning of “promotion” - Learner’s Dictionary

promotion

noun uk us /prəˈməʊʃən/
ADVERTISEMENT [ C, U ]

B2 activities to advertise something:

a sales promotion
They're giving away free T-shirts as a special promotion.
JOB [ C, U ]

B2 If you get a promotion, you get a more important job in your organization:

She was given a promotion in her first month with the company.
ENCOURAGE [ U, no plural ]

ways of encouraging something to happen or develop:

the promotion of a healthy lifestyle

(Definition of “promotion” from the Cambridge Learner’s Dictionary © Cambridge University Press)