gravitino 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. grav·i·ti·nos
A hypothetical particle postulated in supersymmetry theory to be the fermion related to the graviton.
Origin: gravit(on) + (neutr)ino.
gravitino - Science Definition