MACRON Meaning of MACRON in English [ 'makrɒn ]■ noun a written or printed mark (¯) used to indicate a long vowel in some languages, or a stressed vowel in verse.OriginC19: from Gk makron , neut. of makros 'long'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004