sigma
/ˈsɪɡmə/
sigma noun: the eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient.
Noun
sigma (plural sigmas or sigmata)
- The eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient.
- Their names, which are expressive of some bodily or mental excellence, all end with the same letter---the letter which is called San by the Dorians, and Sigma by the Ionians."Herodotus: On The Customs of the Persians", I.139
- The symbol Σ, used to indicate summation of a set or series.
- The symbol σ, used to indicate one standard deviation from the mean, particularly in a normal distribution.
- None of the spikes seen by the experiments is at much more than the "two sigma" level of certainty.
- A level of "five sigma" is required to claim a discovery, meaning there is less than a one in a million chance the data spike is down to a statistical fluke.2011, Paul Rincon, (bbc.co.uk) LHC: Higgs boson 'may have been glimpsed'
- A sigma male (a self-reliant and assertive male).
Adjective
sigma (comparative more sigma, superlative most sigma)
- Possessing characteristics of a sigma male.
Proper noun capitalized: Sigma
Sigma
- A municipality of Capiz, Philippines.
sigma meaning in Hindi, Tamil, Marathi and Urdu
sigma in Hindi
- सिग्मा, सिगमा
sigma in Tamil
- ஓர் அலகுக்கான செந்தர விலகல்
sigma in Marathi
- सिग्मा, सिगमा
sigma in Urdu
- سگما, سیگما, سگمہ
More languagesFewer languages
- sigma in Bengali
- সিগমা, সিগ্মা
- sigma in Telugu
- సిగ్మా sigmā
- sigma in Malayalam
- സിഗ്മ, സിഗ്മാ
- sigma in Kannada
- ಸಿಗ್ಮಾ
- sigma in Punjabi
- ਸਿਗਮਾ, ਸਿੱਗਮਾ
- sigma in Gujarati
- સિગ્મા, સિગમા, સીગ્મા
- sigma in Odia
- ସିଗମା, ସିଗ୍ମା
- sigma in Nepali
- सिग्मा, सिगमा
- sigma in Arabic
- سِيغْمَا sīḡmā, سِيجْمَا sīgmā, سِغْمَا siḡmā, سِجْمَا sigmā
- sigma in Malay
- sigma
- sigma in Persian
- سیگما sigmâ
- sigma in Thai
- ซิกมา sík-mâa
Examples of sigma in a sentence
- How in the sigma are we meant to stop climate change?
- What the sigma is he doing to that dog?
- Recently, chatter on social media has people buzzing about the oh-so-rare sigma male.
Forms of sigma
| Noun | |
|---|---|
| plural | sigmas |
| plural | sigmata |
| Adjective | |
| comparative | more sigma |
| superlative | most sigma |
Origin of sigma
From Ancient Greek σῖγμα (sîgma), probably from the root σῑγ- (sīg-) as seen in σίζω (sízō, “to hiss”) + -μα (-ma, nominal suffix).
Words formed from sigma
Phrases with sigma
Words that rhyme with sigma
Questions about sigma
- What does sigma mean?
- Sigma means the eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient.
- What is sigma in Hindi?
- Sigma in Hindi is सिग्मा, सिगमा. See Sigma meaning in Hindi.
- What part of speech is sigma?
- Sigma can be a noun, an adjective or a proper noun.
- How do you pronounce sigma?
- Sigma is pronounced /ˈsɪɡmə/.
- What is the plural of sigma?
- The plural of sigma is sigmas.
Words near sigma in the dictionary
Source and license
Adapted from Wiktionary: sigma (page history and authors); Sigma (page history and authors); sigma (Hindi, IndicTrans2 machine translation) (model and license); sigma (Tamil Wiktionary) (page history and authors); sigma (Marathi, IndicTrans2 machine translation) (model and license); sigma (Urdu, IndicTrans2 machine translation) (model and license); sigma (Bengali, IndicTrans2 machine translation) (model and license); సిగ్మా (Telugu) (page history and authors); sigma (Malayalam, IndicTrans2 machine translation) (model and license); sigma (Kannada, IndicTrans2 machine translation) (model and license); sigma (Punjabi, IndicTrans2 machine translation) (model and license); sigma (Gujarati, IndicTrans2 machine translation) (model and license); sigma (Odia, IndicTrans2 machine translation) (model and license); sigma (Nepali, IndicTrans2 machine translation) (model and license). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: En-us-sigma.ogg.
Cite this entry: “sigma.” Word.ws, https://word.ws/sigma. Based on Wiktionary, CC BY-SA 4.0.