1. Plural of khi; the twenty-second letter of the Greek alphabet.
Usage: Also spelled chi in English; khi is an alternative transliteration.

Examples

• The Greek alphabet includes alpha, beta, gamma, and khis.
• In mathematics, khis are often used to represent variables in equations.
• The professor wrote several khis on the whiteboard during the lecture.
• Ancient Greek texts frequently employed khis in their original spelling.