Definitions
Eighteenth letter of the Greek alphabet.
Word origin
From Ancient Greek σῖγμα (sîgma), probably from the root σῑγ- (sīg-) as seen in σίζω (sízō, “to hiss”) + -μα (-ma, nominal suffix).
Used in a sentence
“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.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Greek S”5 letters
02“Greek letter before tau”5 letters
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