sigmaDict.lkDict.lk - Sinhala to English DictionaryMeaning sigma Tweet Sinhala Dictionary definitions for sigmasigma 🔊 /sɪˈgmʌ/sigma : සිග්මාවsigma : ග්රීක් හෝඩියේ අග අකුරsigma : සිග්මාsigma definitionNoun. The Greek letter /, /, or / (English S, or s). It originally had the form of the English C.Lern More AboutWiki Definition: sigmaGoogle Search result: GoogleWiki Article: Wikipedia Tweet