Sampi

Sampi (modern: ϡ; ancient shapes: , ) is an archaic letter of the Greek alphabet. It was used as an addition to the classical 24-letter alphabet in some eastern Ionic dialects of ancient Greek in the 6th and 5th centuries BC, to denote some type of a sibilant sound, probably [ss] or [ts], and was abandoned when the sound disappeared from Greek. It later remained in use as a numeral symbol for 900 in the alphabetic ("Milesian") system of Greek numerals. Its modern shape, which resembles a π inclining to the right with a longish curved cross-stroke, developed during its use as a numeric symbol in minuscule handwriting of the Byzantine era. Its current name, sampi, originally probably meant "san pi", i.e. "like a pi", and is also of medieval origin. The letter's original name in antiquity is not known. It has been proposed that sampi was a continuation of the archaic letter san, which was originally shaped like an M and denoted the sound [s] in some other dialects. Besides san, names that have been proposed for sampi include parakyisma and angma, while other historically attested terms for it are enacosis, sincope, and o charaktir. As an alphabetic letter denoting a sibilant sound, sampi (shaped ) was mostly used between the middle of the 6th and the middle of the 5th centuries BC, although some attestations have been dated as early as the 7th century BC. It has been attested in the cities of Miletus, Ephesos, Halikarnassos, Erythrae, Teos (all situated in the region of Ionia in Asia Minor), in the island of Samos, in the Ionian colony of Massilia, and in Kyzikos (situated farther north in Asia Minor, in the region of Mysia). In addition, in the city of Pontic Mesembria, on the Black Sea coast of Thrace, it was used on coins, which were marked with the abbreviation of the city's name, spelled "ΜΕͲΑ". Sampi occurs in positions where other dialects, including written Ionic, normally have double sigma (σσ), i.e. a long /ss/ sound. Some other dialects, particularly Attic Greek, have ττ (long /tt/) in the same words (e.g.