Glottal stop (letter)
ʔ (majuscule: Ɂ, minuscule: ɂ), called a gelded question mark or simply a glottal stop, is an alphabetic letter in some Latin alphabets, most notably in several languages of Canada where it indicates a glottal stop sound. Such usage derives from phonetic transcriptions, for example the International Phonetic Alphabet (IPA), that use this letter for the glottal stop sound.