xiEnglishOxford Dictionary of Englishxi /zʌɪ , (k)sʌɪ / ▸ noun the fourteenth letter of the Greek alphabet (Ξ, ξ), transliterated as ‘x’. ▪ [followed by Latin genitive] Astronomy (Xi) the fourteenth star in a specified constellation: Xi Cygni. – ORIGIN Greek.
EnglishOxford Dictionary of EnglishEnglishOxford Dictionary of English
EnglishOxford Dictionary of English