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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000
References in periodicals archive ?
We all love a reliable car, domestic aid or TV -the one that just defies expectations and keeps going long after its expected life span. You can take great pride in something like this in your world or sadly it could finally give up the ghost.
He also said the expected life span was 67 years in the world while such figure was 74 years in Turkey.
Everything down to the processors themselves has to be built to withstand large amounts of radiation over an expected life span of 15 years, so Cisco turned to specialized component providers.
Compared to steel piping systems, which are prone to internal corrosion, pitting and the formation of pin-hole leaks well before the end of their expected life span, high density polyethylene pipe does not corrode and provides an equal or greater level of performance and safety.
Crum-Cianflone said it may partly have to do with the fact that with improved HAART, HIV has essentially become a chronic condition with lower rates of comorbid infections and a longer expected life span.
The introductory sentence of the 22-page complaint filed in early January accuses Allianz of encouraging and supporting the "unlawful offer and sale of deferred annuity products to Minnesota senior citizens without regard for the suitability of the annuity to the seniors." The complaint cites policy maturity dates that sometimes exceed the senior's expected life span, high surrender charges up to 15%, and allegedly misleading "immediate bonuses" as evidence of violations.
The expected life span of the village is three years; such is the magnitude of recovery.
The expected life span of an electronic component is exponentially dependent on temperature.
Costs associated with initial construction and future repair costs were used to compare the life cycles of the different systems for a 50-year expected life span. A wide variety of variables were considered, including estimated repair costs, concrete deterioration rate, and exposure to deicing chemicals.
The expected life span of the application, as well as requirements for updating, maintenance and on-going support, will vary considerably for each alternative.
The assumption of maximization of expected life span is consistent with an evolutionary perspective.
Heavier particles are separated and collected directly to a dustbin and a polypropylene filter with an expected life span of 5,000 hours traps finer particles.