Definition from Wiktionary, the free dictionary
From Ancient Greek ελληνιστής (hellenistes) "somebody who speaks Greek", from ελληνίζειν (hellenizein) "to speak Greek, to make Greek, to become Greek, hellenize", from Ancient Greek Έλλην (Hellen) "Greek".
Hellenist (plural Hellenists)
- A specialist in the study of Greek language, literature, culture, or history, or an admirer of the Greek culture and civilization.
- A person who adopted the Greek customs, language and culture during the Hellenistic period, especially a Hellenized Jew.
Related terms 
specialist in the study of Greek culture or history