ac·​cu·​mu·​la·​tion | \ ə-ˌkyü-m(y)ə-ˈlā-shən How to pronounce accumulation (audio) \

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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Examples of accumulation in a Sentence

a vast accumulation of evidence about the dangers of smoking the accumulation of leaves on the ground is proceeding at a much faster rate than my raking
Recent Examples on the Web The north Oregon and south Washington Cascades are expected to see several more inches of snow, and about 6 inches of accumulation is expected in the western Columbia River Gorge and upper Hood River Valley. oregonlive, "Winter storm to continue through Sunday morning; more snow, ice expected," 13 Feb. 2021 A quarter of an inch of ice accumulation is possible. Dallas News, "Freezing rain likely," 10 Feb. 2021 Snow showers are possible through much of the day, but only about a half-inch of accumulation is expected. Cliff Pinckard, cleveland, "Cold this week? Yes, but not quite as bad as expected: Cleveland, Akron forecast," 7 Feb. 2021 Freezing temperatures in the north could result in snow and sleet, with the potential of up to an inch of accumulation for roughly the northern third of Arkansas, according to a briefing from the National Weather Service. Brianna Kwasnik, Arkansas Online, "Chance for snow predicted in north Arkansas, forecasters say," 26 Jan. 2021 The lack of accumulation isn't surprising as January is typically San Antonio's driest month, according to the weather service. Taylor Pettaway,, "Scattered storms forecast through the weekend for San Antonio," 19 Jan. 2021 And yes, there may be a few inches of accumulation. Paul Douglas, Star Tribune, "Old Man Winter Pulls His Punch - Accumulating Snow This Weekend," 19 Jan. 2021 Two to four inches of snow accumulation is possible, according to the National Weather Service. Globe Staff,, "More than 2,000 without power as heavy rain moves through Mass.," 16 Jan. 2021 For the areas across North Carolina and Virginia that could get the wintry mix of sleet and freezing rain, up to 0.25 inches of ice accumulation is possible, which could cause power outages. NBC News, "Biggest snowstorm in years on track to bury parts of the Northeast in up to 2 feet of snow," 15 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'accumulation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of accumulation

15th century, in the meaning defined at sense 1

History and Etymology for accumulation

borrowed from Middle French & Latin; Middle French accumulacion, borrowed from Latin accumulātiōn-, accumulātiō, from accumulāre "to accumulate" + -tiōn-, -tiō, suffix of action nouns

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Time Traveler for accumulation

Time Traveler

The first known use of accumulation was in the 15th century

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Statistics for accumulation

Last Updated

20 Feb 2021

Cite this Entry

“Accumulation.” Dictionary, Merriam-Webster, Accessed 2 Mar. 2021.

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More Definitions for accumulation


ac·​cu·​mu·​la·​tion | \ ə-ˌkyü-myə-ˈlā-shən How to pronounce accumulation (audio) \

Kids Definition of accumulation

1 : an act of collecting or gathering the accumulation of snow
2 : collection sense 2 an accumulation of junk



Legal Definition of accumulation

: increase or growth by addition especially when continuous or repeated specifically : an increase in the amount of a fund or property by the continuous addition to it of the income or interest it generates to treat a stock dividend as principal when local law classifies it as income may be deemed an accumulation — W. M. McGovern, Jr. et al. — see also accumulation trust at trust

Note: Because they prevent the enjoyment and benefit of wealth, accumulations are deemed contrary to public policy. A provision in a will for an accumulation will be invalidated if found to be unreasonable by the court.

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