Acceleration

/əkˌsɛl.əˈreɪ.ʃən/

Meaning & Definition

noun
The process of increasing speed or momentum.
The car's acceleration was impressive, allowing it to reach impressive speeds in mere seconds.
The rate of change of velocity per unit of time.
In physics, acceleration is defined as the change in velocity divided by the time taken for that change.
An increase in the rate or amount of something.
The acceleration of the project timeline required additional resources to meet the new deadlines.

Etymology

From Latin acceleratio, from accelerare, meaning 'to hasten'.

Common Phrases and Expressions

acceleration due to gravity
The rate of increase in velocity of an object in free fall, approximately 9.81 m/s² on Earth.
negative acceleration
A decrease in speed; deceleration.
net acceleration
The overall change in velocity after considering all forces acting on an object.

Related Words

deceleration
The reduction of speed or the rate of negative acceleration.
velocity
The speed of something in a given direction.
force
An influence that can change the motion of an object.

Slang Meanings

Gotta accelerate.
When the light turns green, it's time to accelerate!
Hit the gas.
As soon as you merge onto the highway, hit the gas for that quick acceleration.