Diacritical mark
Also known as ¯ · ◌̄ · ˉ · ￣
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4 identifiers linking macron across the web's reference databases
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A macron is a diacritical mark: it is a straight bar ¯ placed above a letter, usually a vowel. Its name derives from the Ancient Greek word μακρόν (makrón), meaning 'long', because it was originally used to mark long or heavy syllables in Greco-Roman metrics. It now more often marks a long vowel. In the International Phonetic Alphabet, the macron is used to indicate a mid-tone; the sign for a long vowel is instead a modified triangular colon ⟨ː⟩.