The phrase "an average lifespan" is correct and usable in written English.
It can be used when discussing the typical duration of life for a particular species, population, or individual under certain conditions.
Example: "The average lifespan of a domestic cat is around 15 years, although some can live much longer."
Alternatives: "a typical lifespan" or "an expected lifespan".
But nothing then could promise you an average lifespan.
And I'm finding an average lifespan of the wild colonies of about three years.
The transplanted kidney itself has an average lifespan of only 10 years.
Lilac-crowned Parrots in captivity have an average lifespan of 40-60 yeand, and young birds are usually sexually mature by 3-5 years of age.
As well as using much less energy than halogens – around 85% – and even less than CFLs, LEDs last longer, with an average lifespan of around 25,000 hours.
According to analysis by OnStride Financial, a £20 note will be used 2,328 times over an average lifespan of 113 months.
He understands the necessity for an education in a sport that has an average lifespan of 2.5 years in the NFL.
By 2040, according to a new report by the Institute for Health Metrics and Evaluation, the Spanish are expected to have an average lifespan of 85.8 years, outliving even the Japanese, who have long headed the global longevity tables.
Tofu, seaweed and fish, all washed down with green tea (believed to fight cancer) are part of a healthy menu that has contributed to an average lifespan of 83 for women and 78 for men.
Japanese women live an average of 86.3 years, putting them at the top of the global longevity table last year, while Japanese men were in fourth place with an average lifespan of 80.5 years.
By training small low-income farmers to grow an easy-adaptable, highly productive and more profitable crop with an average lifespan of 25 years on degraded land, the need of forest conversion for agriculture in these regions can be reduced.
