mountaineering
noun
- sport of mountain climbing
- act of mountain climbing
Wiktionary
noun
Etymology: Etymology tree English mountain Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -ārius Old French -ier Middle French -ierder. English -eer English mountaineer English -ing English mountaineering From mountaineer + -ing.
- The sport of climbing mountains.