The Chinese word "无线" is formed by directly combining the character "无", which means "without" or "no", with the character "线", which means "line" or "wire". This creates a compound where the first character negates the second, resulting in a literal meaning of "without wire" that conceptually translates to "wireless". This formation relies on semantic composition, where the individual meanings merge to express a new idea, commonly used for modern terms like wireless technology.