ac·​cu·​mu·​la·​tor | \ ə-ˈkyü-m(y)ə-ˌlā-tər How to pronounce accumulator (audio) \
plural accumulators

Definition of accumulator

: one that accumulates: such as
a : a device (as in a hydraulic system) in which a fluid is collected and especially in which it is kept under pressure as a means of storing energy
b British : storage battery
c : a part (as in a computer) where numbers are totaled or stored
d chiefly British : a betting arrangement in which winnings garnered from one bet are immediately used to finance a subsequent bet : parlay

Examples of accumulator in a Sentence

Recent Examples on the Web

Nobody in their right mind from the compulsive accumulator class pays the punitive federal estate tax. WSJ, "Dogs Bite Men and Trumps Duck Taxes," 5 Oct. 2018 With this in mind, fantasy owners should focus on stat accumulators rather than a specific position. Michael Beller,, "Draft RB or WR in the First Round? That Question Is Far From Simple for Fantasy Football Owners," 2 July 2018 Advocates for people with HIV and AIDS say copay accumulators are cropping up in their patients’ plans and beginning to cause patients trouble. Special To The Oregonian,, "Prescription drug copay help: 2018 changes leave patients paying more," 4 June 2018 These accumulators, which target specialty medicines that are typically more expensive and are often injected or infused, do not count the value of any coupons toward out-of-pocket medicine costs that are applied toward deductibles. Ed Silverman, STAT, "Which drug makers are most vulnerable to a new cost-shifting maneuver?," 18 Apr. 2018 Backing multiple games at a low goal total Where accumulators are concerned, backing both teams to surpass a low goals total is something everyone should have in their thoughts., "Top Tips: City, Liverpool and Heaps of Goals Feature in BetBull ACCA of the Week," 3 Nov. 2017 And don’t forget, download the BetBull app and follow me @Dan.90min to see if my accumulator brings home the money!, "West Ham vs Liverpool Match Preview: Classic Encounter, Team News, Prediction & More," 3 Nov. 2017 A heated accumulator tank will hold five liters of water during the launch and keep it from freezing until the spacecraft arrives at its destination, where temperatures will be markedly higher. David Grossman, Popular Mechanics, "The Robust Cooling System of a NASA Spacecraft Flying Into the Sun's Atmosphere," 27 June 2017 The can maximize accumulator capacity, like Chevrolet does with the Volt, or run a smaller (and lighter) system like the Toyota uses in their Prius. Tony Borroz, WIRED, "Hybrids Hit the Track," 8 May 2009

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'accumulator.' 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 accumulator

circa 1611, in the meaning defined above

History and Etymology for accumulator

accumulate + -or entry 1

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Time Traveler for accumulator

The first known use of accumulator was circa 1611

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More from Merriam-Webster on accumulator

Rhyming Dictionary: Words that rhyme with accumulator

Nglish: Translation of accumulator for Spanish Speakers

Comments on accumulator

What made you want to look up accumulator? Please tell us where you read or heard it (including the quote, if possible).


to move with exaggerated bouncy motions

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