Etymology of the English word diarch
the English word
diarchderived from the Greek word
di-, δι-, δί-
derived from the Greek word
dis, δίς (double; twice)
derived from the Greek word
arche, ἀρχή ((properly abstract) a commencement, or (concretely) chief (in various applications of order, time, place, or rank))
derived from the Greek word
archein, ἄρχω
Date
The earliest known usage of diarch in English dates from the 19th century.
