Try Our Apps

# kinetic energy

noun, Physics.
1.
the energy of a body or a system with respect to the motion of the body or of the particles in the system.
Compare potential energy.
Origin of kinetic energy
1865-1870
First recorded in 1865-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
Examples from the Web for kinetic energy
Contemporary Examples
• What looks like filthy chaos at the moment is actually the  kinetic energy that gives birth to modern metropolises.

July 13, 2014
• There was a kinetic energy, a vibrancy that leapt off the screen that did, indeed, dazzle.

January 28, 2014
Historical Examples
• Do you mean that that little thing is converting heat to kinetic energy?

Walter S. Tevis
• How does doubling or trebling the speed of an object affect its kinetic energy?

Willis Eugene Tower
• Part or all of their kinetic energy is thus converted into heat.

• Little by little it was losing its excess of kinetic energy.

Harold Leland Goodwin
• In this way the velocity or kinetic energy limit is imposed.

James Weir
• Energy of position is as truly a form of energy as heat or kinetic energy.

James Weir
• kinetic energy is possessed by bodies in virtue of their motion.

Various
• The kinetic energy of the rapid movement was found to absorb within itself the latent energy of the unequal pressure.

British Dictionary definitions for kinetic energy

## kinetic energy

noun
1.
the energy of motion of a body, equal to the work it would do if it were brought to rest The translational kinetic energy depends on motion through space, and for a rigid body of constant mass is equal to the product of half the mass times the square of the speed. The rotational kinetic energy depends on rotation about an axis, and for a body of constant moment of inertia is equal to the product of half the moment of inertia times the square of the angular velocity. In relativistic physics kinetic energy is equal to the product of the increase of mass caused by motion times the square of the speed of light. The SI unit is the joule but the electronvolt is often used in atomic physics Ek, K, T, KE
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
kinetic energy in Medicine

kinetic energy n.
The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed.

The American Heritage® Stedman's Medical Dictionary
Cite This Source
kinetic energy in Science
 kinetic energy   (kə-nět'ĭk)    The energy possessed by a system or object as a result of its motion. The kinetic energy of objects with mass is dependent upon the velocity and mass of the object, while the energy of waves depends on their velocity, frequency, and amplitude, as well as the density of the medium if there is one (as with ocean waves). Compare potential energy.
The American Heritage® Science Dictionary
Cite This Source
kinetic energy in Culture
kinetic energy [(ki-net-ik)]

The energy an object has because of its motion.

The New Dictionary of Cultural Literacy, Third Edition
Cite This Source

### Difficulty index for kinetic energy

Few English speakers likely know this word

### Word Value for kinetic

13
15
Scrabble Words With Friends