orohydrography
/ˌɒrəʊhʌɪˈdrɒɡrəfi/ /ˌɔːrəʊhʌɪˈdrɒɡrəfi/Physical Geography
noun
The orohydrographic features of a region; the branch of hydrography concerned with the role of mountains in forming watersheds and determining drainage patterns.
Origin
Late 19th century; earliest use found in Science. From oro- + hydrography. Compare French orohydrographie, German Oro-Hydrographie.