1. the length of time that a person or animal lives or is expected to live
2. the period of time during which something exists or functions

Examples

• The average human lifespan has increased significantly over the past century.
• Dogs have a much shorter lifespan than humans, typically living 10 to 15 years.
• The lifespan of a battery depends on how often it is used.
• Scientists study the lifespan of different species to understand aging.
• The company extended the lifespan of the product by adding new features.
• A mayfly has one of the shortest lifespans in the animal kingdom.