Meaning of lambda particle

lamb'da par"ticle

Pronunciation: [key]
— Physics. Physics.
  1. any of a family of neutral baryons with strangeness −1 or charm +1, and isotopic spin 0. The least massive member of the lambda family was the first strange particle to be discovered. Symbol: &Lgr;
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: