Which letter does the Greek letter 'Chi' correspond to in English?

The Greek letter 'Chi' corresponds to the letter 'X' in English. In the Greek alphabet, 'Chi' is represented by the symbol Χ, which closely resembles the uppercase English letter X. The pronunciation can vary, but it often signifies a 'ch' sound in Greek. This correspondence has significant relevance in various fields, including mathematics and physics, where 'Chi' is frequently used as a symbol. Understanding this relationship helps in interpreting Greek letters used in academic and professional contexts.