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| sig·ma [ sígmə ] (plural sig·mas) |
noun |
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| Definition: |
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1. 18th letter of Greek alphabet: the 18th letter of the Greek alphabet, represented in the English alphabet as "s"
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2. mathematics symbol showing summation: the symbol (σ) indicating the addition of the numbers or quantities indicated
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3. physics
Same as sigma hyperon
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| [Early 17th century. Via Latin< Greek] |
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  sig·mate adjective |
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