Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “mountaineering”


noun [U]     /ˌmaʊn.tɪˈnɪə.rɪŋ/ US  /-tənˈɪr.ɪŋ/
the sport or activity of climbing mountains Mountaineering and rock climbing
(Definition of mountaineering noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of mountaineering

Word of the Day


relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More