sigma

sig·ma  (sgm)

n.

1. The 18th letter of the Greek alphabet. See Table at alphabet.

2. A sigma factor.

3. A sigma baryon.

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[Greek sgma, of Phoenician origin; see smk in Semitic roots.]

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sigmate (-mt) adj.

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sigma [ˈsɪgmə]

n

1. (Linguistics / Letters of the Alphabet (Foreign)) the 18th letter in the Greek alphabet (Σ, σ or, when final, ς), a consonant, transliterated as S

2. (Mathematics) Maths the symbol Σ, indicating summation of the numbers or quantities indicated

[Greek, of Semitic origin; related to Hebrew samekh]

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sigma  (sgm)

A sigma baryon.

Thesaurus

Noun

1.

sigma - the 18th letter of the Greek alphabet Greek alphabet - the alphabet used by ancient Greeks alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"

Translations

sigma [ˈsɪgmə] n → sigma m or f inv