283. Mountains

See also 178. GEOGRAPHY ; 202. HEIGHTS ; 411. VOLCANOES .

acrophilia

a love of high mountains and of heights. —acrophile , n.

alpinism

the climbing of the Alps or any equally high mountain ranges. —alpinist , n.

orogenesis

the process of the formation of mountains. Also called orogeny . —orogenic , adj.

orography, oreography

Physical Geography. the study of mountains and mountain systems. —orographic, oreographic, oreographical, orographical , adj.

orology, oreology

the scientific study of mountains. —orologist, oreologist , n. —orological, oreological , adj.

orometry

the measurement of mountains. —orometric , adj.

orophilous

Botany. referring to orophytes, a class of plants growing on mountains below the timberline.