mountain A landform that extends above the surrounding terrain in a limited area. A mountain is generally steeper than a hill, but there is no universally accepted standard definition for the height of a mountain or a hill although a mountain usually has an identifiable summit and a local relief of more than 300m. ENVO ENVO:00000081 EcoLexicon:mountain FTT:1000 FTT:118 FTT:460 FTT:548 FTT:713 FTT:896 FTT:993 Geonames:T.MT Geonames:T.MTS Mountain SWEETRealm:Mountain TGN:21430 TGN:21434 Wikipedia:Mountain cerro cordillera foothill knoll mound mount mountain mountains mount