1. Word Games
  2. Word of the Day
  3. New Words & Slang
  4. Video
 

antimatter


an·ti·mat·ter

noun \ˈan-tē-ˌma-tər, ˈan-ˌtī-\

Definition of ANTIMATTER

: matter composed of antiparticles
See antimatter defined for kids »

First Known Use of ANTIMATTER

1950

Rhymes with ANTIMATTER

for that matter, pitter-patter, printed matter, subject matter

Learn More About ANTIMATTER

Browse

Next Word in the Dictionary: antimechanized
Previous Word in the Dictionary: antimasquer
All Words Near: antimatter

Seen & Heard

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

Test Your Vocabulary

Take Our 10-Question Quiz

Name That Thing

Take our visual vocab quiz

Test Your Knowledge »

True or False?

A quick quiz about stuff worth knowing

Take It Now »

Join Us on FB & Twitter

Get the Word of the Day and More

Facebook | Twitter

Get Our Free Apps

Voice Search, Favorites,
Word of the Day, and More

iPhone | iPad | Android | More