life expectancy

• Nombre moyen d'années qu'une personne ou un groupe de personnes est censé vivre, selon des données statistiques et des facteurs de santé.

The average number of years a person or group of people is expected to live, based on statistical data and health factors.

1. Average lifespanB2formal

   The average number of years a person or animal is expected to live, based on statistical data.

   espérance de vie

   • Life expectancy in developed countries has increased significantly over the last century.
   • The life expectancy of a domestic cat is around 15 years.
   • Improvements in healthcare have raised the average life expectancy.

2. Expected duration of an objectB2formal

   The predicted length of time that a product, machine, or system will function effectively.

   durée de vie

   • The life expectancy of this car engine is about 200,000 miles.
   • Solar panels have a life expectancy of 25 to 30 years.
   • The manufacturer guarantees a life expectancy of 10 years for this battery.