Last Updated：2025/11/19

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

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acceleration

Source Word

acceleration

IPA(Pronunciation)

Noun

uncountable countable

Japanese Meaning

物体が速度を上げて進むこと、またはその状態 / 動作や作用が速くなる、促進されること

The acceleration of the car on the highway surprised everyone.

高速道路での車の加速は皆を驚かせた。

Sense（1）

a falling body moves toward the earth with an acceleration of velocity

Sense（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.

Sense（3）

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

Sense（4）

accelerations

（ plural ）