average lifespan

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• lifespan — life|span W3 [ˈlaıfspæn] n the average length of time that someone will live or that something will continue to work →↑lifetime ▪ Men have a shorter lifespan than women. a lifespan of 5 days/10 years etc ▪ A TV set has an average lifespan of 11… …   Dictionary of contemporary English

• Average cost — In economics, average cost is equal to total cost divided by the number of goods produced (the output quantity, Q). It is also equal to the sum of average variable costs (total variable costs divided by Q) plus average fixed costs (total fixed… …   Wikipedia

• lifespan — noun (C) the average length of time that someone will live or that something will continue to work: Men have a shorter lifespan than women. compare lifetime …   Longman dictionary of contemporary English

• lifespan — the maximum expected age, on average, for a species, cohort, stock, or a population in the absence of fishing. Smaller than maximum age although may be used in this sense. Abbreviated as Tmax in stock assessment models …   Dictionary of ichthyology

• lifespan — life span or life·span (līfʹspăn ) n. 1. A lifetime. 2. The average or maximum length of time an organism, material, or object can be expected to survive or last. * * * …   Universalium

• lifespan — 1. The duration of life of an individual. 2. The normal or average duration of life of members of a given species. SEE ALSO: longevity …   Medical dictionary

• Indefinite lifespan — is a term used in the life extension movement to refer to the longevity of humans, and other lifeforms, under conditions in which aging can be effectively and completely prevented and treated. Such individuals would still be susceptible to… …   Wikipedia

• Calorie restriction — Calorie restriction, or caloric restriction (CR), aims to improve health and slow the aging process by limiting dietary energy intake. Calorie restriction is a common measure, found in several dietary regimens, including the Okinawa diet [The… …   Wikipedia

• Life extension — refers to an increase in maximum or average lifespan, especially in humans, by slowing down or reversing the processes of aging. Average lifespan is determined by vulnerability to accidents and age related afflictions such as cancer or… …   Wikipedia

• Life expectancy — This article is about the measure of remaining life. For the Dean Koontz novel, see Life Expectancy (novel). For List of countries by life expectancy, see List of countries by life expectancy. Life expectancy is the expected (in the statistical… …   Wikipedia

• Free-radical theory — The free radical theory of aging states that organisms age because cells accumulate free radical damage over time. In general, a free radical is any atom or molecule that has a single unpaired electron in an outer shell. While a few free radicals …   Wikipedia