CERTAIN GREEK LETTER Crossword Clue

The most common solution for the crossword clue "CERTAIN GREEK LETTER" are SIGMA with 5 letters.
We know 2 solutions for: CERTAIN GREEK LETTER
Crossword Puzzle Infos
The term 'Certain Greek Letter' refers to two letters in the Greek alphabet, CHI (Χ) and SIGMA (Σ). CHI is the 22nd letter of the Greek alphabet and is pronounced as a 'k' sound. SIGMA is the 18th letter of the Greek alphabet and is pronounced as an 's' sound. Both letters are used in mathematics, science, and engineering.
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