What does Sigma mean?

Definitions for Sigma
ˈsɪg məSig·ma

Here are all the possible meanings and translations of the word Sigma.

Princeton's WordNet

  1. sigmanoun

    the 18th letter of the Greek alphabet


  1. sigmanoun

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

  2. sigmanoun

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

  3. sigmanoun

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

Webster Dictionary

  1. Sigmanoun

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

  2. Etymology: [L., from Gr. , .]


  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

  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

  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.

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How to pronounce Sigma?

How to say Sigma in sign language?


  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. Ryan McNutt:

    Right now SIGMA believes the actions the federal government has taken to be sufficient.

  2. 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.

  3. 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.

  4. 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.

  5. Ryan McNutt:

    Allowing drivers to occasionally work more hours will reduce the number of trucks and drivers it takes to move the same amount of fuel, right now SIGMA believes the actions the federal government has taken to be sufficient.

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Translations for Sigma

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    an exorbitant or unlawful rate of interest
    • A. concoction
    • B. vigorish
    • C. ignominy
    • D. recital

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