Definition

1. Noun:
   • The act of decelerating; decreasing the speed: The process of reducing speed or velocity.
   • (Physics) A rate of decrease in velocity: A measure of how quickly velocity is decreasing over time.
   • A decrease in rate of change: A slowdown in the pace or rate of any process or activity.

Usage

• Use "deceleration" to describe the physical process of slowing down a moving object.
• Use "deceleration" in physics to quantify the negative acceleration (slowing down) of an object.
• Use "deceleration" figuratively to describe a slowdown in non-physical processes, such as economic growth or diplomatic activity.

Examples

• Noun:
  • The driver's smooth deceleration prevented an accident. (The act of decreasing speed)
  • Calculate the deceleration of the vehicle when the brakes are applied. (The rate of decrease in velocity)
  • The report noted a deceleration in the growth of consumer spending. (A decrease in rate of change)

Advanced Usage

• "Rapid deceleration": A very quick decrease in speed.
  • The crash was caused by a rapid deceleration that threw the passengers forward.
• "Economic deceleration": A slowdown in economic activity.
  • The central bank is concerned about the current economic deceleration.

Variants and Related Words

• Decelerate (verb): To reduce speed; to slow down.
  • The train began to decelerate as it approached the station.
• Decelerator (noun): A device or agent that causes deceleration.
  • The engine acted as a decelerator.

Synonyms

• Slowing: The act of becoming slower.
• Retardation: (Formal/Technical) The act of delaying or slowing progress.
• Slowdown: A reduction in speed or activity.

Antonyms

• Acceleration: An increase in speed or rate.
• Quickening: The process of becoming faster.

Related Phrases

• "To undergo deceleration": To experience a process of slowing down.
  • The spacecraft will undergo deceleration before entering the planet's atmosphere.
• "Rate of deceleration": The specific measure of how fast something is slowing down.
  • The rate of deceleration was measured at 5 meters per second squared.

Noun

1. the act of decelerating; decreasing the speed
   • he initiated deceleration by braking
2. (physics) a rate of decrease in velocity
3. a decrease in rate of change
   • the deceleration of the arms race