• synonyms

sigma particle

See more synonyms for sigma particle on Thesaurus.com
noun Physics.
  1. an unstable hyperon having positive, negative, or zero electric charge and strangeness −1. Symbol: Σ
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Origin of sigma particle

First recorded in 1960–65
Also called sigma baryon.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018