glacier
GLAY-sher
/ˈɡleɪʃər/
A slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles.
Implies massive scale and continuous, slow movement downhill under the pressure of its own weight.
The story behind the word. From Old French 'glaciere', derived from Vulgar Latin *glaciarium, originating in classical Latin 'glacies' (ice). It was adopted into English during the 18th century as Alpine naturalists studied alpine ice movements.
Word relationships
- ice sheet: An ice sheet covers huge continental areas, whereas a glacier is often constrained to a mountain valley.
- geysers: Geysers emit hot water, contrasting with icy glaciers.
Commonly confused with
- iceberg: An iceberg floats freely in ocean water, whereas a glacier rests on land or streams down a valley.
Word family
- glacial (adjective): Relating to ice or glaciers; extremely cold or slow.
- glaciated (adjective): Covered or shaped by glaciers.
- glaciation (noun): The process or result of being covered by glaciers.
Collocations
- receding glacier
- alpine glacier
- glacier melt
- massive glacier
Idioms & expressions
- at a glacial pace (extremely slow progress)
Example sentences
- "Every glacier is an engine of change, sculpturing mountains and reshaping valleys." Nature essay
- "Scientists monitor the retreat of the glacier as a key indicator of global temperature trends." Climate science
Memory hook
GLACIER sounds like 'glass' — ice as smooth and hard as heavy glass sliding down a hill. A slow river of mountain ice.
When not to use
Do not confuse with a simple iceberg (floating ice) or seasonal snowpack.
Fun facts
- Glaciers store roughly 69% of the world's fresh water.
Related words
Explore more words
avalanche, polar, landslide, sedimentary, permafrost, deposit
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