Icecaps

Part of speech: noun

Definitions

1. A vast and permanent layer of ice covering polar regions or high mountain areas, often affecting global sea levels
2. Regions of ice formed by compacted snow that persist throughout the year, crucial for reflecting sunlight
3. Large masses of ice that significantly influence climate and ecosystems by regulating temperatures and storing freshwater

Etymology: "Icecaps" is the plural of "icecap", a compound of "ice" and "cap". The noun "ice" comes from Old English "īs", while "cap" comes from Old English "cæppe", borrowed from Late Latin "cappa", a hooded cloak. The image is literal: a cap is something that sits over the top of a head, and an icecap is ice that sits over the top of a polar region or mountain. The plural matters here because the word usually describes more than one ice sheet. The polar regions have two, one over the North Pole and one over Antarctica, and high mountain ranges can each carry their own.

Synonyms: glaciers, ice sheets, polar ice, frozen tops, ice masses