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[ik-spek-tuh n-see] /ɪkˈspɛk tən si/
noun, plural expectancies.
the quality or state of expecting; expectation; anticipatory belief or desire.
the state of being expected.
an object of expectation; something expected.
Origin of expectancy
1590-1600; < Medieval Latin ex(s)pectantia. See expectant, -ancy
Can be confused
expectancy, expectation. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for expectancy
  • Average life expectancy, today at an all-time high, could in our generation increase ten more years.
  • At the court this night there is an air of expectancy among the nobles.
  • The children followed the proceedings with intense expectancy.
  • Already, people predict that this new generation's life expectancy may be lower than the previous.
  • These adjustments will take increased life expectancy into account, since beneficiaries will need to be supported longer.
  • For patients whose melanoma isn't caught early, the life expectancy is less than a year.
  • Life expectancy is increasing around the globe, too.
  • The phase change material can run through these thermal cycles indefinitely, easily outlasting the life expectancy of the garment.
  • Shelf life expectancy is tens of years, far exceeding any other energy storage system currently known.
  • Similarly, his figures for life expectancy correspond to those in the original sources.
British Dictionary definitions for expectancy


something expected, esp on the basis of a norm or average: his life expectancy was 30 years
anticipation; expectation
the prospect of a future interest or possession, esp in property: an estate in expectancy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for expectancy

1590s, from Latin expectantia (see expectant) + -ancy.

Online Etymology Dictionary, © 2010 Douglas Harper
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