What is the meaning of Acceleration?

The act of accelerating, or the state of being accelerated; increase of motion or action; as opposed to retardation or deceleration.

The amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).

The change of velocity with respect to time (can include deceleration or changing direction).

The advancement of students at a rate that places them ahead of where they would be in the regular school curriculum.

acceleration

acceleration

acceleration (increase or increasing of speed, of something concrete or abstract)

acceleration

Source: wiktionary.org