Definition of accumulation
1
: something that has accumulated or has been accumulated
an impressive accumulation of knowledge
2
: the action or process of accumulating something : the state of being or having accumulated
the steady accumulation of snow
3
: increase or growth by addition especially when continuous or repeated
accumulation of interest
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Merriam-Webster unabridged
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Time Traveler for accumulation
The first known use of accumulation was in the 15th century
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