The Ancient Greek language includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD.
A diphthong (or; from Greek: δίφθογγος, diphthongos, literally "two sounds" or "two tones"), also known as a gliding vowel, is a combination of two adjacent vowel sounds within the same syllable.
In linguistics, a grapheme is the smallest unit of a writing system of any given language.
In phonology, hiatus or diaeresis refers to two vowel sounds occurring in adjacent syllables, with no intervening consonant.
Language change is variation over time in a language's phonological, morphological, semantic, syntactic, and other features.
In phonetics and phonology, a semivowel or glide, also known as a non-syllabic vocoid, is a sound that is phonetically similar to a vowel sound but functions as the syllable boundary, rather than as the nucleus of a syllable.
This table lists the vowel letters of the International Phonetic Alphabet.
In phonetics, a triphthong (from Greek τρίφθογγος, "triphthongos", literally "with three sounds," or "with three tones") is a monosyllabic vowel combination involving a quick but smooth movement of the articulator from one vowel quality to another that passes over a third.
A vowel is one of the two principal classes of speech sound, the other being a consonant.
In historical linguistics, vowel breaking, vowel fracture, or diphthongization is the change of a monophthong into a diphthong or triphthong.