CRASIS Meaning of CRASIS in English [ 'kreɪsɪs ]■ noun ( plural crases -si:z ) Phonetics a contraction of two adjacent vowels into one long vowel or diphthong.OriginC16: from Gk krasis 'mixture'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004