American Heritage Dictionary
(4)
Century Dictionary
GNU Webster's 1913
WordNet
(2)
Elsewhere on the web
Dillin noted that for a human in the United States, whose life expectancy is about 78 years, a 20 percent increase in longevity would mean living to 96.— HHMI News
Life expectancy -- 60.8 yrs.: male, 57.6 yrs.; female 64.2 (2005 UNDP estimate) *.
Health: Life expectancy -- men 75.2 years, women 77.8 years.
Life expectancy -- men 76 yrs., women 80 yrs. Work force (2004 est.):
Life expectancy -- 68.5 yrs. Work force (23 million):

Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about once a week.
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