Οκτώβριος

Etymology
Learnedly, from Hellenistic, from , with -ber > -βριος in the pattern of other names of months e.g. . An addition of [m] -- similar to other month names, since Hellenistc times. It also occurs at a contemporary vernacular Οκτώμβριος which is considered a mistake.

Proper noun

 * 1) October