Glottal stop
When many languages, such as Arabic, are Romanized (which means they are written with the Latin alphabet instead of their usual writing system), the glottal stop is written with the apostrophe  or the symbol ʾ. This is where the IPA letter  comes from. In many Polynesian languages that use the Latin alphabet, the glottal stop is written with a rotated apostrophe, . This letter is called ‘okina in Hawaiian and Samoan. In Malay the glottal stop is written with the letter  (at the end of words). In Võro and Maltese, it is written with .