Unit prefix or if letters such as "T", which are already in use as SI units or prefixes, will again be skipped. Several personal proposals have been made for extending the series of prefixes, with ascending terms such as "xenna, weka, vendeka" (from Greek "ennea" (9), "deka" (10), "endeka" (11)) and descending terms such as "xono", "weco", "vundo" (from Latin "novem/nona" (9), "dec" (10), "undec" (11). Using Greek for ascending and Latin for descending would be consistent with established prefixes such as "deca, hecto, kilo" vs "deci, centi, milli"). Although some of these are repeated on the internet, none are in actual
Greek East and Latin West of these countries did not actually speak Latin. The term "Greek" varies in how it is applied. In the most narrow sense, after the rise of the Roman Empire it is only applied to the Eastern Roman (Byzantine) Empire. Depending on the author it may also be applied to The term "Latin" has survived much longer as a unifying term for the West because the Latin language survived until very recently as a scholarly and liturgical language despite the fragmentation and religious changes in Western Europe. The Greek language, by contrast, died out somewhat quickly in the Arab lands, and