What is "lekythion"

A lekythion or lecythion, in classical Greek and Latin poetry, is a metric pattern (colon) defined by a sequence of seven alternating long and short syllables at the end of a verse . In classical grammatical terminology it can be described as a trochaic dimeter catalectic, i.e. a combination of two groups of two trochees each , with the second of these groups lacking its final syllable; or as a trochaic hepthemimer, i.e. a trochaic sequence of seven half-feet. A lekythion can appear in several different metric contexts in different types of poetry, either alone as a verse or as the second of two cola following a caesura. A frequent type of occurrence in Greek drama is in lines of iambic trimeter, the most frequent metre used in spoken dialogue, i.e. lines of the type ⏓—⏑—|⏓—⏑—|⏓—⏑—. These lines may have a metric caesura after the first five syllables, with the remaining line thus resulting in a lekythion group.