acceleration

• acc.
• a.

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

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

• Audio (US)

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• Rhymes: -eɪʃən

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.

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).

• (act or state, amount): deceleration, retardation

• displacement
• velocity
• jerk

acceleration (plural accelerationes)

1. acceleration

accelerera +‎ -tion

acceleration c

1. acceleration; a change in velocity