Definitions for "mountaineering"
Climbing mountains as a sport.
At one end of the spectrum, mountaineering can include peak bagging, where little or no technical skills or equipment are needed to reach the summit of a mountain. It can also include full-blown expeditions to the highest peaks and the worst weather conditions on Earth. Generally, though, mountaineering adds specialized ice climbing skills and gear to those of rock climbing. Mountaineering also tends to be destination oriented.
the activity of climbing a mountain
montañismo