Dictionary
an•ti•bar•y•on
Pronunciation: (an"tē-bar'ē-on", an"tī-), [key]—
n. Physics.
the antiparticle of a baryon, having baryon number -1 and charge, strangeness, and other quantum numbers opposite in sign to those of the baryon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.