Early 18th century; earliest use found in Nathan Bailey (d. 1742), lexicographer and schoolmaster. From classical Latin monti-, alternative stem of mōns + -genous.
Definition of montigenous in US English:
montigenous
adjectivemɒnˈtɪdʒɪnəs
rare
Of or native to mountain areas.
Origin
Early 18th century; earliest use found in Nathan Bailey (d. 1742), lexicographer and schoolmaster. From classical Latin monti-, alternative stem of mōns + -genous.