kinetic theory

noun

Definition of kinetic theory

: either of two theories in physics based on the fact that the minute particles of a substance are in vigorous motion:

a : a theory that the temperature of a substance increases with an increase in either the average kinetic energy of the particles or the average potential energy of separation (as in fusion) of the particles or in both when heat is added

— called also kinetic theory of heat

b : a theory that the particles of a gas move in straight lines with high average velocity, continually encounter one another and thus change their individual velocities and directions, and cause pressure by their impact against the walls of a container

— called also kinetic theory of gases

Keep scrolling for more

Learn More about kinetic theory

Dictionary Entries near kinetic theory

kinetic potential

Statistics for kinetic theory

Look-up Popularity

Time Traveler for kinetic theory

The first known use of kinetic theory was in 1864

See more words from the same year

Comments on kinetic theory

What made you want to look up kinetic theory? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

provender

food or victuals

Test Your Vocabulary

Farm Idioms Quiz

What does 'poke' refer to in the expression 'pig in a poke'?

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ