Longman Dictionary of Contemporary English homepage

Date: 1500-1600
Language: Latin
Origin: missio 'act of sending', from mittere 'to send, throw'

mission

noun
     
Related topics: Officials, Military, Religion
mis‧sion [countable]
1

air force/army etc

PM an important job that involves travelling somewhere, done by a member of the airforce, army etc, or by a spacecraft:
He was sent on over 200 missions before being killed in action.
mission to
the first manned space mission to Mars
US troops taking part in the peacekeeping mission
2

job

an important job that someone has been given to do, especially when they are sent to another place:
Her mission was to improve staff morale.
on a mission
scientists on a mission to the rainforest, to study possible medicinal uses of plants
rescue/diplomatic/fact-finding etc mission
a group of US congressmen on a fact-finding mission to Northern Ireland
3

duty

something that you feel you must do because it is your duty [= calling, vocation]:
Momich's mission was to help young people in his local community.
His main mission in life is to earn as much money as possible.
4

purpose

the purpose or the most important aim of an organization:
The mission of International House is to enable students of different cultures to live together and build life-long friendships.
mission statement
5

government

PGO a group of important people who are sent by their government to another country to discuss something or collect information [= delegation]:
a British trade mission to Moscow
6

religion

a) RR religious work that involves going to a foreign country in order to teach people about Christianity or help poor people
b) RR a building where this kind of work is done, or the people who work there
7

mission accomplished

used when you have successfully achieved something that you were trying to do
8

woman/man with a mission

someone who is very determined to achieve what they are trying to do - often used humorously

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