[an-tee-proh-ton, an-tahy-]
noun Physics.
an elementary particle having negative charge equal in magnitude to that of the electron and having the same mass and spin as a proton; the antiparticle of the proton.

1935–40; anti- + proton Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To antiprotons
World English Dictionary
antiproton (ˈæntɪˌprəʊtɒn)
the antiparticle of the proton; a particle having the same mass as the proton but an equal and opposite charge

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
American Heritage
Science Dictionary
antiproton   (ān'tē-prō'tŏn', ān'tī-)  Pronunciation Key 
The antiparticle that corresponds to the proton.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences for antiprotons
As a result, scientists had to develop a number of techniques for creating antiprotons.
Related Words
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature