▸ noun the tenth letter of the Greek alphabet (Κ, κ), transliterated as ‘k’. ▪ [followed by Latin genitive] Astronomy (Kappa) the tenth star in a constellation: Kappa Orionis.
▪ [as modifier] Biochemistry denoting one of the two types of light polypeptide chain present in all immunoglobulin molecules (the other being lambda).
EnglishOxford Dictionary of English
