antineutrino[an′tī no̵̅o̅ trē′nō; -tē-, -ti-]
antineutrino definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
the antiparticle of the neutrino, with no charge and a rest mass close to zero: it is emitted during radioactive decay
antineutrino definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun pl. an·ti·neu·tri·nos
The antiparticle of the neutrino.
antineutrino - Science Definition
The antiparticle that corresponds to the neutrino.