Dictionary
moun•tain•ous
Pronunciation: (moun'tn-us), [key]—
adj.
1. abounding in mountains:
a mountainous wilderness.
2. of the nature of a mountain.
3. resembling a mountain or mountains, as being very large and high:
mountainous waves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.