Meaning of delta particle

del'ta par"ticle

Pronunciation: [key]
— Physics. Physics.
  1. any of a family of baryon resonances having strangeness 0, isotopic spin , and either a single or double positive electric charge, a single negative charge, or no charge. Symbol: &Dgr;
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.