U+0344 "̈́" Combining Greek Dialytika Tonos Unicode Character

U+0344 "̈́" Combining Greek Dialytika Tonos is a combining diacritical mark used in the polytonic orthography of the Greek language, where it represents a diaeresis placed over a vowel that also carries an acute accent. This character is applied to letters such as alpha or iota to indicate both that two adjacent vowels are to be pronounced separately (the dialytika function) and that the syllable bears a rising pitch or stress (the tonos function). It appears above the vowel and is generally encoded as part of a sequence with its base letter, allowing for the accurate rendering of ancient or liturgical Greek texts that require this specific combination of marks.