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[uh-kyoo-myuh-ley-shuh n] /əˌkyu myəˈleɪ ʃən/
act or state of accumulating; state of being accumulated.
that which is accumulated; an accumulated amount, number, or mass.
growth by continuous additions, as of interest to principal.
Origin of accumulation
1480-90; < Latin accumulātiōn- (stem of accumulātiō). See accumulate, -ion
Related forms
nonaccumulation, noun
overaccumulation, noun
preaccumulation, noun
reaccumulation, noun
superaccumulation, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for accumulation
Contemporary Examples
Historical Examples
  • Their forefathers were stationed there before them, and thus there has been an accumulation of local knowledge.

    Hodge and His Masters Richard Jefferies
  • It has been the accumulation of years, and was intended as a provision for you and Robert.

    Brave and Bold Horatio Alger
  • The greatest difficulty that was experienced was due to the accumulation of rime on the instruments.

    South! Sir Ernest Shackleton
  • This place is remarkable for the accumulation of Aztec and Spanish antiquities.

    Aztec Land Maturin M. Ballou
  • Where subsistence was scant, accumulation was at least slow.

    The Quest for a Lost Race Thomas E. Pickett
British Dictionary definitions for accumulation


the act or process of collecting together or becoming collected
something that has been collected, gathered, heaped, etc
  1. the continuous growth of capital by retention of interest or earnings
  2. (in computing the yield on a bond purchased at a discount) the amount that is added to each yield to bring the cost of the bond into equality with its par value over its life Compare amortization (sense 2)
the taking of a first and an advanced university degree simultaneously
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 accumulation

late 15c., from Latin accumulationem (nominative accumulatio) "a heaping up," noun of action from past participle stem of accumulare "to heap up, amass," from ad- "in addition" (see ad-) + cumulare "heap up," from cumulus "heap" (see cumulus).

Online Etymology Dictionary, © 2010 Douglas Harper
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