Greek Muslims all Greek dialects spoken in Turkey, a term akin to "Romeyka" derived from the word "ρωμαίικα" or Roman with Byzantine origins. Current day Greeks refer to their language as "ελληνικά" or Greek, an appellation that replaced the previous term "Romeiika" during the early nineteenth century. In Turkey standard modern Greek is referred to as "Yunanca", whereas the ancient Greek language is called "Eski Yunanca" or "Grekçe". According to Heath W. Lowry's great work about Ottoman tax books ("Tahrir Defteri") with Halil İnalcık, it is claimed that most "Turks" of Trebizond and the Pontic Alps region in northeastern Anatolia are of
Ancient Greek phonology and this cluster underwent metathesis early in the Ancient Greek period. Metathesis is likely in this case; clusters of a voiced stop and , like , do not occur in Ancient Greek, since they change to by assimilation (see below), while clusters with the opposite order, like , pronounced , do occur. Ancient grammarians, such as Aristotle in his "Poetics" and Dionysius Thrax in his Art of Grammar, categorized letters () according to what speech sounds ( 'elements') they represented. They called the letters for vowels ('pronounceable', singular ); the letters for the nasals, liquids, and , and the letters