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
Declension of Greek nouns in Latin Declension of Greek nouns in Latin The declension of nouns in Latin that are borrowed from Greek varies significantly between different types of nouns, though certain patterns are common. Many nouns, particularly proper names, in particular, are fully Latinized and declined regularly according to their stem-characteristics. Others, however, either retain their Greek forms exclusively, or have the Greek and Latin forms side by side. These variations occur principally in the singular, in the plural the declension is usually regular. Note, however, that many Greek names, of the third declension in Latin, pass over into the first declension in the Plural;