icecap

n. permanent covering of ice and snow (as on a mountain peak or at either pole)

An ice cap is a dome-shaped ice mass that covers less than 50 000 km² of land area (usually covering a highland area). Masses of ice covering more than 50 000 km² are termed an  ice sheet.Ice caps are not constrained by topographical features (i.e., they will lie over the top of mountains) but their dome is usually centred around the highest point of a massif. Ice flows away from this high point (the ice divide) towards the ice cap's periphery.Vatnajökull is an example of an ice cap in Iceland.
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Noun
1. a mass of ice and snow that permanently covers a large area of land (e.g., the polar regions or a mountain peak)
(synonym) ice cap
(hypernym) ice mass

CALOTTA GLACIALE

n. ชั้นน้ำแข็งที่ปกคลุมพื้นโลก (แถบขั้วโลกเหนือและใต้)