1. the state or process of a species, family, or other group being or becoming extinct
Usage: plural of extinction
2. the action of making or becoming extinguished
Usage: plural of extinction

Examples

• Mass extinctions have occurred several times in Earth’s history.
• The museum displayed fossils from various extinctions over millions of years.
• Scientists study past extinctions to understand current biodiversity loss.
• Climate change may cause multiple extinctions in the coming decades.
• The extinctions of large mammals happened after the ice age.
• Habitat destruction leads to local extinctions of many species.