U+00DC "Ü" Latin Capital Letter U with Diaeresis Unicode Character

U+00DC "Ü" Latin Capital Letter U with Diaeresis is a vowel in several European alphabets, including German, where it represents a distinct sound formed by rounding the lips as for "U" while positioning the tongue as for "E". It is also used in languages such as Spanish, Catalan, and French to indicate that the "U" should be pronounced separately in letter combinations like "güe" and "güi". Originating from a medieval scribal practice of placing a small "e" above the letter to denote a sound change, the diaeresis or umlaut mark has become an integral part of modern orthography. This character has been available since the earliest versions of the Unicode standard, encoding a common typographic variant that supports consistent digital representation across global text systems.