1. the state or process of a species, family, or other group being or becoming completely eliminated or destroyed
2. the action of making or becoming extinguished
3. the complete disappearance or elimination of something

Examples

• The extinction of the dinosaurs occurred millions of years ago.
• Many scientists are working to prevent the extinction of endangered species.
• The extinction of the fire took several hours.
• Climate change threatens the extinction of polar bears.
• The extinction of traditional crafts is a cultural loss.
• Mass extinction events have shaped Earth’s history.
• The extinction of the candle left the room in darkness.