Archon \Ar"chon\, n. [L. archon, Gr. ?, ?, ruler, chief magistrate, p. pr. of ? to be first, to rule.] (Antiq.) One of the chief magistrates in ancient Athens, especially, by pre["e]minence, the first of the nine chief magistrates. -- {Ar*chon"tic}, a. [1913 Webster]