sigma

[sig-muh]

noun

1. the 18th letter of the Greek alphabet: Σ, σ, ς.

2. the consonant sound represented by this letter.

sigma

/ ˈsɪɡmə /

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

1. A sigma baryon.

Word History and Origins

Origin of sigma¹

First recorded in 1600–10; from Latin, from Greek sígma

Word History and Origins

Origin of sigma¹

Greek, of Semitic origin; related to Hebrew _samekh

Example Sentences

Despite this, the combination of data from all three radio telescopes revealed a deviation exceeding five sigma, a statistically very strong signal considered in science as evidence for a significant result.

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In scientific jargon that is a five sigma result.

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"Slay", "sigma" and "skibidi" were chosen as the top three slang words, which OUP said demonstrated the role of social media in influencing children's vocabulary.

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If you’re lurking in dark corners of the internet, there’s alpha, beta and sigma males.

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"Our work shows that the dark photon hypothesis is preferred over the standard model hypothesis at a significance of 6.5 sigma, which constitutes evidence for a particle discovery."

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