U+1E8C "Ẍ" Latin Capital Letter X with Diaeresis Unicode Character

U+1E8C "Ẍ" Latin Capital Letter X with Diaeresis is a specialized glyph used primarily in transliteration and linguistic notation, representing the letter X modified with a diaeresis or umlaut to indicate a distinct phonetic value, such as a voiceless velar fricative or a separate syllable boundary, depending on the writing system. It is rarely used in standard modern languages but appears in historical or scholarly texts, such as those for Old Norse or in the transcription of certain African languages, where the diaeresis clarifies pronunciation or distinguishes the character from the plain X. This character is encoded in the Latin Extended Additional block of Unicode, ensuring compatibility across digital platforms for precise orthographic representation.