Sigma



noun
1.
the 18th letter of the Greek alphabet: Σ, σ, ς.
2.
the consonant sound represented by this letter.
noun
1.
the 18th letter in the Greek alphabet (Σ, σ, or, when final, ς), a consonant, transliterated as S
2.
(maths) the symbol Σ, indicating summation of the numbers or quantities indicated

sigma sig·ma (sĭg’mə)
n.

Symbol ς The 18th letter of the Greek alphabet.
sigma
(sĭg’mə)
A sigma baryon.

A scientific visual programming environment from NASA.
(http://fi-www.arc.nasa.gov/fia/projects/sigma/).

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  • Sigmate

    adjective 1. having the form of the Greek sigma or the letter S. adjective 1. shaped like the Greek letter sigma or the Roman S

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    noun 1. defective pronunciation of sibilant sounds.



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