accumulator

noun

ac·​cu·​mu·​la·​tor ə-ˈkyü-m(y)ə-ˌlā-tər 

plural accumulators

: 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

Since the start of June, ether accumulators have purchased 1% of the coin in circulation. —Tanaya MacHeel, CNBC, 29 July 2025

Instead, a flywheel accumulator rides shotgun next to the driver; this third fast-acting electric motor spins at up to 36 000 rpm to store power. —IEEE Spectrum, 28 Mar. 2011

Supportive plants deter pests (repellers), attract pollinators and other beneficial insects (attractors), improve soil quality (nitrogen fixers, accumulators), and prevent weeds from creeping in (suppressors and mulchers). —Lauren Landers, Better Homes & Gardens, 10 July 2025

Your Next Read Can Andoni Iraola’s Bournemouth defy the bookmakers to secure a top-six league finish? Could betting on Manchester City to qualify be the best value for your FA Cup accumulator? —Julia Ranney, New York Times, 28 Mar. 2025

Word History

Etymology

accumulate + -or entry 1

First Known Use

circa 1611, in the meaning defined above

Rhymes for accumulator

• accelerator
• adjudicator
• administrator
• appropriator
• articulator
• attenuator
• bronchodilator
• collaborator
• communicator
• conciliator
• cooperator
• coordinator

Kids Definition

accumulator

noun

ac·​cu·​mu·​la·​tor ə-ˈkyü-m(y)ə-ˌlāt-ər 

: one that accumulates

especially : a part (as in a computer) where numbers are totaled or stored