† metoˈnomasyObs. [ad.Gr. µετονοµασία, n. of action of µετονοµάζειν to change in name, f. µετα- (denoting change) + ὄνοµα name.] A change (or translation) of name. 1609Bp. W. Barlow Answ. Nameless Cath. 32 Hee is by his Metamorphosis, or Metonomasie translated into Mathæus Tortus.