Homonym: Χ (Unknown)
"Χ" is the 24th letter of the Greek alphabet, known as "Chi." In the Greek numeral system, it represents the number 600. The letter is often used in mathematics and science to denote variables or unknown values.
In addition to its numerical significance, "Χ" has cultural importance. It is commonly associated with the Christian symbol Chi-Rho, which combines the letters "Χ" and "Ρ" to represent Christ. The letter is also used in various fields, including physics and engineering, to signify specific concepts or quantities.