hecatarchynonce-wd.|ˈhɛkətɑːkɪ| [f.Gr. ἑκατ-όν hundred + -αρχία rule, after heptarchy.] Government by a hundred rulers; = hecatontarchy (with play on Hecate). 1884Blackmore Tommy Upm. II. xx. 273 Any other man, of any English era, from Heptarchy to Hecatarchy (that last child of Hecate).