[ mey-kron, mak-ron ]
/ ˈmeɪ krɒn, ˈmæk rɒn /


a horizontal line used as a diacritic over a vowel to indicate that it has a long sound or other specified pronunciation, as (ā) in fate (fāt).

Origin of macron

1850–55; noun use of Greek makrón, neuter of makrós long. See macro- Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for macron

British Dictionary definitions for macron


/ (ˈmækrɒn) /


a diacritical mark (¯) placed over a letter, used in prosody, in the orthography of some languages, and in several types of phonetic respelling systems, to represent a long vowel

Word Origin for macron

C19: from Greek makron something long, from makros long
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for macron



"short horizontal line placed over a vowel to indicate length," 1827, from Greek makron, neuter of makros "long" (see macro-).

Online Etymology Dictionary, © 2010 Douglas Harper