U+014C "Ō" Latin Capital Letter O with Macron Unicode Character

U+014C "Ō" Latin Capital Letter O with Macron is a vowel used in several languages, including Māori, Latvian, and the romanization of Japanese, where the macron diacritic indicates a long or extended pronunciation of the letter "O." It is encoded in the Latin Extended-A block of Unicode, distinct from using a standalone combining macron, and is essential for accurate orthography in languages where vowel length changes meaning, such as distinguishing between distinct words in Māori. This character appears in digital text across computing platforms, requiring proper font support to display the macron centered above the O.