\Hel`le*nis"tic\, Hellenistical \Hel`le*nis"tic*al\,
a. [Cf. F. Hell['e]nistique.]
Pertaining to the Hellenists.

{Hellenistic} {language, dialect, or idiom}, the Greek spoken
   or used by the Jews who lived in countries where the Greek
   language prevailed; the Jewish-Greek dialect or idiom of
   the Septuagint.