Pronunciation IPA (key): /ˈglæsiə/ or /ˈgle(ɪ)siə/ or /ˈgle(ɪ)sjɚ/ or /ˈgle(ɪ)ʃɚ/ SAMPA: /"gl{si@/ or /"glEIsi@/ Audio (US)(file) Noun Singular glacier Plural glaciers (countable) A glacier is similar to a mountain or river made of ice. Related words glacial glaciation iceberg Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads