San (letter) San (letter) San (Ϻ) was an archaic letter of the Greek alphabet. Its shape was similar to modern M, or ϡ, or to a modern Greek Sigma (Σ) turned sideways, and it was used as an alternative to Sigma to denote the sound . Unlike Sigma, whose position in the alphabet is between Rho and Tau, San appeared between Pi and Qoppa in alphabetic order. In addition to denoting this separate archaic character, the name "San" was also used as an alternative name to denote the standard letter Sigma. The existence of the two competing letters Sigma and San is
History of the Greek alphabet of an upright and less ornamented style of writing more like Latin print. In 1982, the monotonic orthography was officially adopted, abandoning the rough and smooth breathings (since the sound had long since disappeared) and reducing the three types of accent mark to one (since the tone accent had been replaced by a stress accent). Greek pronunciation has also changed considerably since ancient times, but these changes have not been apparent from the orthography, which has remained conservative — see Greek alphabet for a summary of the current situation. The names of some letters were changed in order to distinguish