A macron (/ˈmækrɒn, ˈmeɪ-/) is a diacritical mark, a straight bar (¯) placed above a letter, usually a vowel. Its name derives from the Greek μακρόν (makrón), meaning "long", and 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⟩.
近义、反义、联想词
近义词
n.
diacritical mark, diacritic
联想词
kanji日本汉字;lowercase小写字母;vowels元音,母音;
英英词典
macron n.
a diacritical mark (-) placed above a vowel to indicate a long sound