follow Dictionary.com

Get our exclusive Word of the Day images!

sigma particle

noun, Physics.
1.
an unstable hyperon having positive, negative, or zero electric charge and strangeness −1. Symbol: Σ.
Also called sigma baryon.
Origin
1960-1965
1960-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source

Word of The Day

Difficulty index for sigma particle

Few English speakers likely know this word

Word Value for sigma

8
10
Scrabble Words With Friends