Definitions for Sigma
ˈsɪg məSig·ma

Princeton's WordNet(3.33 / 3 votes)Rate this definition:

1. sigma(noun)

   the 18th letter of the Greek alphabet

Wiktionary(0.00 / 0 votes)Rate this definition:

1. sigma(Noun)

   The name for the eighteenth letter of the Classical and Modern Greek, the nineteenth letter of Old and Ancient.

2. sigma(Noun)

   The symbol u03A3, used to indicate summation of a set or series.

3. sigma(Noun)

   The symbol u03C3, used to indicate one standard deviation from the mean, particularly in a normal distribution.

Webster Dictionary(2.00 / 1 vote)Rate this definition:

1. Sigma(noun)

   the Greek letter /, /, or / (English S, or s). It originally had the form of the English C

Origin: [L., from Gr. , .]

Freebase(0.00 / 0 votes)Rate this definition:

1. Sigma

   Sigma is the eighteenth letter of the Greek alphabet, and carries the 'S' sound. In the system of Greek numerals it has a value of 200. When used at the end of a word, and the word is not all upper case, the final form is used, e.g. Ὀδυσσεύς – note the two sigmas in the center of the name, and the word-final sigma at the end.

Chambers 20th Century Dictionary(3.00 / 1 vote)Rate this definition:

1. Sigma

   sig′ma, n. the Greek letter corresponding to our s—written Σ (capital), σ (small initial) or ς (small final).—adjs. Sig′mate, Sigmat′ic.—ns. Sigmā′tion, the adding of s at the end of a word or syllable; Sig′matism, repetition of s or the s-sound: defective pronunciation of this sound.—adjs. Sig′moid, -al, formed like s.

Suggested Resources(3.00 / 1 vote)Rate this definition:

1. sigma

   The sigma symbol -- In this Symbols.com article you will learn about the meaning of the sigma symbol and its characteristic.

2. sigma

   Song lyrics by sigma -- Explore a large variety of song lyrics performed by sigma on the Lyrics.com website.

How to pronounce Sigma?

1. 

   Alex

   US English

   

   Daniel

   British

   

   Karen

   Australian

   

   Veena

   Indian

How to say Sigma in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Sigma in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of Sigma in Pythagorean Numerology is: 4

Examples of Sigma in a Sentence

1. Crescans Master:

   There was never a six sigma to be followed if it was not worked upon first. Change is a result of doing and nothing else.

2. The Sigma Alpha Mu board:

   Sigma Alpha Mu's values and standards of conduct were violated by the actions of those members whose behavior was abhorrent.

3. Colton Henson:

   I think folks need to figure out how they sell being part of Trump's Washington without giving up the perception that they are still willing to fight the sigma of Washington and for their constituents.

4. Eric Rivera:

   We appreciate the willingness of the national office of Delta Sigma Phi to step in and address these issues and take action with us. We hope that through these actions, when the time is right, they will bring a chapter back to SDSU and be productive members of our community.

5. The Trinidad-born rapper:

   These fraternities are places that us as hip-hop artists, we come and do amazing shows for these fraternities, like I just did Texas Tech, I just did Texas AM, Delta Chi, Sigma Chi, and those guys were great. And I've done a show actually at Oklahoma last year, so to see that that chapter feels that type of way toward the black race, it hurts, man. It sucks.

Images & Illustrations of Sigma

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