1. an important task or assignment that someone is sent to do
2. a group of people sent to a foreign country for a specific purpose
3. the purpose or goal that guides an organization or person's actions

Examples

• The spy was given a dangerous mission behind enemy lines.
• Our company’s mission is to provide affordable healthcare.
• The diplomatic mission arrived in the capital yesterday.
• She volunteered at a medical mission in rural Africa.
• The space mission launched successfully this morning.
• His mission was to deliver the important documents safely.