I.to change, alter, Hdt.
II.to exchange,
1.to take in exchange, adopt, assume, ὀρνίθων φύσιν Ar.; so, μ. τόπον, χώραν to go into a new country, Plat.
2.to exchange by leaving, to quit, μ. τὸν βίον Isocr.; so, μεταλλάσσειν alone, Plat.
III.intr. to undergo a change, Hdt.