ChiraqRead more in this article about some frequently asked questions and fun facts related to our definitions.
Before X Was X: The Dark Horse Story Of The 24th LetterSince its inception, the letter X has struggled to establish its own identity, so it may be no coincidence that X is commonly used to represent the unknown in both language and mathematics. But, how was it created?
or Chi-tsĕ, Chi-tzŭ
12th-century b.c., legendary Chinese founder of Korea.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019