ac·cu·mu·la·tor (?-kyo?om?y?-l??t?r)n.1. One that accumulates: an accumulator of old magazines.2. A register or electric circuit in a calculator or computer, in which the results of arithmetical and logical operations are formed.3. Chiefly British An automobile storage battery.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.accumulator (??kju?mj??le?t?) n1. (General Physics) Also called: battery or storage battery a rechargeable device for storing electrical energy in the form of chemical energy, consisting of one or more separate secondary cells2. (Horse Racing) horse racing Brit a collective bet, esp on four or more races, in which the stake and winnings on each successive race are carried forward to become the stake on the next, so that both stakes and winnings accumulate progressively so long as the bet continues to be a winning one3. (Computer Science) a. a register in a computer or calculator used for holding the results of a computation or data transferb. a location in a computer store in which arithmetical results are producedCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ac?cu?mu?la?tor (??kyu my??le? t?r) n. 1. one that accumulates. 2. a circuit or device, as in a computer or calculator, that totals or stores numbers. 3. Brit. a storage battery or storage cell. [1685?95;