Shin (letter) languages, as follows: In the Arabic alphabet, ' is at the original (21st) position in Abjadi order. A letter variant ' takes the place of Samekh at 15th position. "" represents , and is the 13th letter of the modern alphabet order and is written thus: The Arabic letter "šīn" was an acronym for "something" ( "šayʾ(un)" ) meaning the unknown in algebraic equations. In the transcription into Spanish, the Greek letter "chi" (χ) was used which was later transcribed into Latin "x". According to some sources, this is the origin of "x" used for the unknown in the equations.
History of the Greek alphabet whether they should be considered as siblings of the latter, adopted from the Phoenician simultaneously, or rather as early descendants of the nascent Greek alphabet proper. History of the Greek alphabet The history of the Greek alphabet starts with the adoption of Phoenician letter forms and continues to the present day. The Greek alphabet postdates Linear B, the syllabic script that was used for writing Mycenaean Greek, by several centuries. This article concentrates on the early period, before the codification of the now-standard Greek alphabet. The Phoenician alphabet was strictly speaking one that was consistently explicit only about consonants, though