acceleration

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English[edit]

Alternative forms[edit]

Etymology[edit]

First attested in 1531. From French accélération or more likely directly from Latin accelerātiō (a hastening, acceleration)[1]. Equivalent to accelerate +‎ -ion.

Pronunciation[edit]

  • enPR: əksĕlərā'shən, IPA(key): /ək.ˌsɛl.ə.ˈɹeɪ.ʃən/, /æk.ˌsɛl.ə.ˈɹeɪ.ʃən/, /ɪk.ˌsɛl.ə.ˈɹeɪ.ʃən/
  • (file)
  • Rhymes: -eɪʃən

Noun[edit]

acceleration (countable and uncountable, plural accelerations)

  1. (uncountable) The act of accelerating, or the state of being accelerated; increase of motion or action; as opposed to retardation or deceleration.
    a falling body moves toward the earth with an acceleration of velocity
  2. (countable) The amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).
    The boosters produce an acceleration of 20 metres per second per second.
    • (Can we date this quote?) Isaac Taylor
      A period of social improvement, or of intellectual advancement, contains within itself a principle of acceleration []
  3. (physics) The change of velocity with respect to time (can include deceleration or changing direction).
  4. The advancement of students at a rate that places them ahead of where they would be in the regular school curriculum.

Usage notes[edit]

Acceleration in SI units is measured in metres per second per second (m/s2), or in imperial units in feet per second per second (ft/s2).

Antonyms[edit]

Translations[edit]

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See also[edit]

References[edit]

  1. ^ Elliott K. Dobbie, C. William Dunmore, Robert K. Barnhart, et al. (editors), Chambers Dictionary of Etymology (Chambers Harrap Publishers Ltd, 2004 [1998], ISBN 0550142304), page 6

Interlingua[edit]

Noun[edit]

acceleration (plural accelerationes)

  1. acceleration

Swedish[edit]

Etymology[edit]

accelerera +‎ -tion

Noun[edit]

acceleration c

  1. acceleration; a change in velocity

Declension[edit]