activation energy

noun

Definition of activation energy

  1. :  the minimum amount of energy required to convert a normal stable molecule into a reactive molecule

1924

First Known Use of activation energy

1924


Medical Dictionary

activation energy

play
noun ac·ti·va·tion energy \ˌak-tə-ˈvā-shən-\

Medical Definition of activation energy

  1. :  the minimum amount of energy required to convert a normal stable molecule into a reactive molecule—called also energy of activation


Learn More about activation energy


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to link together in a series or chain

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • winning-words-from-the-national-spelling-bee-logo
  • Which is the correct spelling of the winning word from 1988?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!