montane UK /ˈmɒnteɪn/US /mɑnˈteɪn/adjective 1noun 1forms 3 adjective1 •Of, inhabiting, or growing in mountain areas; specifically, the cool, moist upland slopes below the timberline.[T]he upper part of these peaks is very bare and monotonous, and almost destitute of damp precipice; and I know of only seven Montane species that grow there above 650 yards. — 1871 noun1 •An animal or a plant of a montane habitat.The wintergreens, and northern montanes such as Linnaea have their stronghold in these pinewoods and some of their rarity may be due to the reduction in the extent of the forest. — 2005 formsmontanes · more montane · most montane