Definition of macron in English:

macron

Syllabification: ma·cron
Pronunciation: /ˈmāˌkrän, ˈmak-, ˈmākrən
 
/

noun

A written or printed mark (¯) used to indicate a long vowel in some languages and phonetic transcription systems, or a stressed vowel in verse.
More example sentences
  • As in the transliteration of Sanskrit, the macron over the letter indicates that the sound of the vowel is lengthened, thus kan is pronounced ‘koh-an’, with the emphasis on the first syllable.
  • However, diphthongs and macrons are seldom used in modern Romanji to differentiate the vowels with multiple sounds (like the long O).
  • We are, just barely, in Kaneohe (which might really be Kane'ohe, but none of the maps have the macrons, so I've given up using them anywhere).

Origin

mid 19th century: from Greek makron, neuter of makros 'long'.

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