lifespan

noun

1. The length of time for which an organism lives.

   “Meronym: healthspan”

   “Some clams have lifespans far longer than those of human beings.”

   “What the devil happened to my year? Another little digit on my lifespan, what a bore.”

   “Last spring, the periodical cicadas emerged across eastern North America. Their vast numbers and short above-ground life spans inspired awe and irritation in humans—and made for good meals for birds and small mammals.”

   “Asari Cultural VI: Due to our lifespan-sometimes reaching 1,000 years of age-we are patient in our decisions, and prefer long-term solutions over short-term gains.”

2. (broadly)The length of time for which something exists or is current, valid, or usable.

   “The virtual enterprise forum developed several "classical" management functions for which resources were available throughout its lifespan.”

   “The reactor, located in the city of Fuqing city in China’s southeastern Fujian province, was designed to have a 60-year lifespan, with its core equipment domestically produced.”