Acceleration Meaning
/əkˌsɛl.əˈɹeɪ.ʃən/Definition, CEFR level B2, pronunciation, examples, and quiz.
Definition
nounThe act of accelerating, or the state of being accelerated; increase of motion or action; as opposed to retardation or deceleration.
nounThe amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).
Sentence Examples
Word Origin & History
Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *kel-der. Latin celer Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Italic *-āō Latin -ō Latin celerō Latin accelerō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin accelerātiōder. English acceleration First attested in 1531. From French accélération or more likely directly from Latin accelerātiō (“a hastening, acceleration”). Equivalent to accelerate + -ion.