ep·ei·rog·e·ny  (ěp'ī-rŏj'ə-nē)  n. pl. ep·ei·rog·e·nies Uplift or depression of the earth's crust, affecting large areas of land or ocean bottom. [Greek ēpeiros, continent + -geny.] e·pei'ro·gen'ic (ĭ-pī'rō-jěn'ĭk) adj., e·pei'ro·gen'i·cal·ly adv. |