Mount Orizaba moun·to·ri·zaba uncommon noun 1. an extinct volcano in southern Mexico between Mexico City and Veracruz; the highest peak in Mexico (18,695 feet) SynonymsCitlaltepetlMount OrizabaMt OrizabaPico de Orizaba Related words Broader terms volcano Parts Mexico WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.