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hydraulic accumulator (6)


From Latin accumulātor, agent noun of accumulō (pile up), accumulate +‎ -or.


  • (US) IPA(key): /ə.ˈkjum.jə.ˌleɪ.tɚ/
  • (file)


accumulator (plural accumulators)

  1. (literally) One who, or that which, accumulates.
    Synonym: collector
    He is a great accumulator of bad jokes.
  2. (Britain) A wet-cell storage battery.
    Looks like it's time to recharge the accumulator again.
  3. (gambling) A collective bet on successive events, with both stake and winnings being carried forward to accumulate progressively.
    Synonym: parlay
    • 2000, Guinness World Records, Guinness Book of Records 2000, Demco Media, →ISBN:
      The largest payout for a bet on a horse race was $1,627,084 after tax, paid to Britons Anthony Speelman and Nicholas Cowan on their $64 nine-horse accumulator at Santa Anita Racecourse, California, in 1987.
  4. (mechanics) A system of elastic springs for relieving the strain upon a rope, as in deep-sea dredging.
  5. (manufacturing) A vessel containing pressurized hot water ready for release as steam.
  6. (engineering, hydraulics) A container which stores hydraulic power for release, in the form of a pressurized fluid (often suspended within a larger tank of fluid under pressure).
    Synonym: shock absorber
  7. (programming) A register or variable used for holding the intermediate results of a computation or data transfer.
    • 1986, Jules H. Gilder, Apple IIc and IIe Assembly Language, Springer Science & Business Media, →ISBN, page 139:
      The contents of the memory location and accumulator are NOT altered, but the Negative, Zero and Carry flags are conditioned according to the result of the subtraction.
    • 2011, Oliver Sturm, Functional Programming in C#, John Wiley & Sons, →ISBN, page 122:
      The function signature has changed to include the additional parameter accumulator. This parameter, in a way, takes on the job of the return value.
  8. (finance) A derivative contract under which the seller commits to sell shares of an underlying security at a certain strike price, which the buyer is obligated to buy.
    Synonym: share forward accumulator
    • 2014, Jerome Yen; Kin Keung Lai, Emerging Financial Derivatives, Routledge, →ISBN:
      This product was fairly popular among investors in Hong Kong in 2007 considering the market conditions at that time. It is an accumulator of the underlying stock with a contract period of 12 months.
  9. (UK, education, historical) One who takes two higher degrees simultaneously, to reduce their length of study.
    • 1691–92, Anthony Wood (antiquary), Athenæ Oxonienses
      The first of these two was a compounder, the other who was an accumulator, was lately made provost of Trin. coll. near Dublin, and on the 31st of March 1692 was nominated bish. of Kilmore.
  10. (cryptography) A one way membership function.

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The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.

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Borrowed from French accumulateur, from Latin accumulātor. The spelling and pronunciation was subsequently adapted to Latin or English accumulator.


  • IPA(key): /ˌɑ.ky.myˈlaː.tɔr/
  • (file)
  • Hyphenation: ac‧cu‧mu‧la‧tor
  • Rhymes: -aːtɔr


accumulator m (plural accumulatoren)

  1. (dated, now chiefly historical) battery, accumulator
    Synonym: accu

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Etymology 1[edit]

accumulō (to amass) +‎ -tor


accumulātor m (genitive accumulātōris); third declension

  1. one who heaps up, amasses, or hoards

Third-declension noun.

Case Singular Plural
Nominative accumulātor accumulātōrēs
Genitive accumulātōris accumulātōrum
Dative accumulātōrī accumulātōribus
Accusative accumulātōrem accumulātōrēs
Ablative accumulātōre accumulātōribus
Vocative accumulātor accumulātōrēs

Etymology 2[edit]

See the etymology of the corresponding lemma form.



  1. second/third-person singular future passive imperative of accumulō


  • accumulator”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • accumulator”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • accumulator in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette