life expectancy

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life expectancy

[′līf ik′spek·tən·sē]
(biology)
The expected number of years that an organism will live based on statistical probability.
(engineering)
The predicted useful service life of an item of equipment.

life expectancy

the number of years the average member of a social group can expect to live. This is largely determined by environmental factors, though improvements in these do not lead to an infinitely extendable life expectancy, since the maximum period of existence of a member of the human species remains at about 110 years and biological factors impose limits less than this for most humans. The average life expectancy at birth in the UK in the late 20th-century was for men 71, and for women 76, and this has changed little in the last half century However, there is variation according to social class and region. Currently these demographic differences are widening, with life expectancy in the north of England and Scotland being significantly less than that in the south. See also BLACK REPORT, DEATH RATE AND MORTALITY RATE.
References in periodicals archive ?
In China the average lifespan was only 42 years as recently as 1950 -- but then it began increasing by six months per year, so that the average Chinese citizen can now expect to live to 75.
This is why actuaries predict that babies born in 2000 will have an average lifespan of 100 years.
Durable goods, as defined by the Bureau of Economic Analysis (BEA), include goods that have an average lifespan of at least three years, such as automobiles and household furnishings.
He begins his book with the story of a young officer who died after six weeks and four days, four days over the average lifespan of a junior officer on the Western Front during the worst weeks of the war.
Summary: TEHRAN (FNA)- Scientists are reporting the first evidence that consumption of a healthful antioxidant substance in apples extends the average lifespan of test animals, and does so by 10 percent.
4 - while their counterparts in Merthyr Tydfil have an average lifespan of just 74.
Abolishing the fixed default retirement age will give people more choices as the average lifespan increases, but the change also means people will pay taxes longer, a revenue raising benefit that could help address the country's record deficit.
Requiring approximately 80 labor hours per unit to manufacture, the Company's products are widely recognized as the longest-lasting and highest quality in the market, with an average lifespan exceeding 10 years.
Lashes is believed to be around 18 years old and was thought to be too old to have any more offspring as the average lifespan of a llama is only 15 to 20 years old.
The average lifespan in China is now 73 (it was only 41 in 1949); many parts of the country have no pension plan--this is where the son supporting his aged parents comes in--and those which do, e.
Long-term puffing knocks about 10 years off an average lifespan.