Mid 16th century. From ancient Greek Μῆλος (goes to classical Latin Mēlos), the name of the most south-easterly island of the Cyclades in the Aegean + -ian, after ancient Greek Μήλιος, noun and adjective.
Definition of Melian in US English:
Melian
(also Melean)
nounˈmiːlɪən
A native or inhabitant of Melos.
adjectiveˈmiːlɪən
Of or relating to the island of Melos.
Origin
Mid 16th century. From ancient Greek Μῆλος (goes to classical Latin Mēlos), the name of the most south-easterly island of the Cyclades in the Aegean + -ian, after ancient Greek Μήλιος, noun and adjective.