activation energy

noun

Definition of activation energy

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

First Known Use of activation energy

1924


Medical Dictionary

activation energy

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

medical Definition of activation energy

: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

pleasing or sweet sound

Get Word of the Day daily email!

Test Your Vocabulary

Forms of Government Quiz

  • knupfer-painting-solon-before-croesus
  • A gerontocracy is rule by:
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Dictionary Devil

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!