acceleration
/əkˌsɛl.əˈɹeɪ.ʃən/ noun
Forms accelerations acc. a.
- noun (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.”
- noun (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.”
- noun (physics) The change of velocity with respect to time (can include deceleration or changing direction).
- noun The advancement of students at a rate that places them ahead of where they would be in the regular school curriculum.
Synonyms
Antonyms
Etymology
First attested in 1531. From French accélération or more likely directly from Latin accelerātiō (“a hastening, acceleration”). Equivalent to accelerate + -ion.
Webster’s 1913
- noun The act of accelerating, or the state of being accelerated; increase of motion or action; as, a falling body moves toward the earth with an acceleration of velocity; --opposed to retardation.
Etymology [L. acceleratio: cf. F. accélération.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “acceleration”, CC BY-SA 4.0. Details