antimatter

[an-tee-mat-er, an-tahy-] Origin

an·ti·mat·ter

[an-tee-mat-er, an-tahy-]
noun Physics.
matter composed only of antiparticles, especially antiprotons, antineutrons, and positrons.

Origin:
1950–55; anti- + matter
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To antimatter

00:10

00:09

00:08

00:07

00:06

00:05

00:04

00:03

00:02

00:01

Antimatter is always a great word to know.
So is electromagnetic radiation. Does it mean:
the attractive effect of matter on other matter; the region surrounding an astronomical body in which the force of gravitation is strong
radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x-rays, and gamma rays
Collins
World English Dictionary
antimatter (ˈæntɪˌmætə)
 
n
a form of matter composed of antiparticles, such as antihydrogen, consisting of antiprotons and positrons

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

antimatter
also anti-matter, 1953, from anti- + matter.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
antimatter   (ān'tĭ-māt'ər)  Pronunciation Key 
A form of matter that consists of antiparticles.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary

antimatter definition


In physics, matter made of antiparticles.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Dictionary.com, LLC. Copyright © 2012. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT