lifespan

A lifespan refers to how long someone or something lives.

When we talk about lifespan, we often use it when thinking about people's ages. You might hear someone say, "My mom's lifespan was 85 years," which means she lived until she was 85. We also use this word for animals and sometimes even objects, like buildings or devices. For instance, a car's lifespan is how long it lasts before breaking down completely.