The ionic (or Ionic) is a four-syllable metrical unit (metron) of light-light-heavy-heavy (u u – –) that occurs in ancient Greek and Latin poetry. According to Hephaestion it was known as the Ionicos because it was used by the Ionians of Asia Minor; and it was also known as the Persicos and was associated with Persian poetry.[1] Like the choriamb, in Greek quantitative verse the ionic never appears in passages meant to be spoken rather than sung.[2] "Ionics" may refer inclusively to poetry composed of the various metrical units of the same total quantitative length (six morae) that may be used in combination with ionics proper: ionics, choriambs, and anaclasis.[3] Equivalent forms exist in English poetry and in classical Persian poetry.[4]