U+02BA "ʺ" Modifier Letter Double Prime Unicode Character

U+02BA "ʺ" Modifier Letter Double Prime is a spacing modifier letter used primarily in linguistics and phonetics to denote secondary stress in phonetic transcriptions within the International Phonetic Alphabet, where it appears as a superscript double prime mark placed before a stressed syllable to indicate a lesser degree of emphasis than primary stress. It can also represent a specific diacritic in certain transliteration systems or act as a typographic symbol distinct from the inch or minute symbol.