noun
- the period of time during which someone is alive
- the period of time during which something exists or functions
adjective
- continuing for the entire duration of someone’s life
Examples
- She dedicated her lifetime to helping others.
- The warranty covers the lifetime of the product.
- He received a lifetime achievement award.
- During his lifetime, he witnessed many historical changes.
- The battery has a lifetime of about five years.
- She made a lifetime commitment to her career.
- This is a once-in-a-lifetime opportunity.