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Sigma (/ ˈ s ɪ ɡ m ə / SIG-mə; [1] uppercase Σ, lowercase σ, lowercase in word-final position ς; Ancient Greek: σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals , it has a value of 200.
The letter sigma, in standard orthography, has two variants: ς, used only at the ends of words, and σ, used elsewhere. The form ϲ ("lunate sigma", resembling a Latin c) is a medieval stylistic variant that can be used in both environments without the final/non-final distinction.
Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities.
Sigma males are “considered ‘equal’ to Alphas on the hierarchy but live outside of the hierarchy by choice,” reads the website. Urban Dictionary adds that sigma “is what all 10 year olds ...
The Greek spelling alphabet is a spelling alphabet (or "phonetic alphabet") for Greek, i.e. an accepted set of easily differentiated names given to the letters of the alphabet for the purpose of spelling out words.
sigma: labialized voiceless alveolar or dental fricative: sʷ, s͎, θʷ: intended for the voiceless whistled sibilant, ȿ, of Shona and related languages, withdrawn 1976 [3] ƺ: ezh with tail labialized voiced alveolo-palatal fricative: ʑʷ, ʒᶣ intended for w before front vowels in Twi; [3] may also be used for the lightly rounded English ...
Sigma , the villain of the Mega Man X series; Sigma , a hero from Overwatch; Ninja Gaiden Sigma, a video game; Sigma, a character in the BioShock 2 video game universe; Sigma Harmonics, a video game; Sigma Klim, a major character and protagonist in the Zero Escape video game series; Sigma, a team on the Dota 2 online video game
This is an accepted version of this page This is the latest accepted revision, reviewed on 15 January 2025. Letter names for unambiguous communication Not to be confused with International Phonetic Alphabet. Alphabetic code words A lfa N ovember B ravo O scar C harlie P apa D elta Q uebec E cho R omeo F oxtrot S ierra G olf T ango H otel U niform I ndia V ictor J uliett W hiskey K ilo X ray L ...