SIGMA
sigma
(noun) the 18th letter of the Greek alphabet
Source: WordNet® 3.1
Etymology
Noun
sigma (plural sigmas or sigmata)
The eighteenth letter of the Classical and Modern Greek alphabets, the twentieth letter of Old and Ancient.
• "Herodotus: On The Customs of the Persians", I.139
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.
(mathematics) The symbol ÎŁ, used to indicate summation of a set or series.
(statistics) The symbol Ï, used to indicate one standard deviation from the mean, particularly in a normal distribution.
Anagrams
• Magis., agism, migas
Source: Wiktionary
Sig"ma, n.; pl. Sigmas. Etym: [L., from Gr.
Definition: The Greek letter S, or s). It originally had the form of the English C.
Source: Webster’s Unabridged Dictionary 1913 Edition
Recent Word Finds
Word of the Day
23 January 2025
LEFT
(adjective) being or located on or directed toward the side of the body to the west when facing north; âmy left handâ; âleft center fieldâ; âthe left bank of a river is bank on your left side when you are facing downstreamâ
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