Definition

1. Noun:
   • The quality or fact of having a long life or existence: The state of living for a long time.
   • Long duration of service, existence, or function: The length of time something or someone continues to exist, operate, or be effective.

Examples of Usage

• Noun:
  • Good diet and exercise can contribute to human longevity.
  • The longevity of the ancient tree was remarkable, estimated at over a thousand years.
  • Her longevity in the film industry spanned five decades.
  • The company values employee longevity and rewards long service.

Advanced Usage

• "Longevity risk": In finance and insurance, the risk associated with people living longer than expected, which can strain pension funds and retirement plans.
  • Actuaries must carefully calculate longevity risk for annuity products.

Variants and Related Words

• Long-lived (adj): Having a long life or duration.
  • The Galapagos tortoise is a famously long-lived species.

Synonyms

• Durability: The ability to withstand wear, pressure, or damage; enduring quality.
• Long life: A simple phrase meaning a life of great length.
• Endurance: The fact or power of enduring an unpleasant or difficult process or situation without giving way.

Noun

1. the property of being long-lived
2. duration of service
   • her longevity as a star
   • had unusual longevity in the company