glacial period

ice age, time when the earth was covered with glaciers

For the prehistoric era commonly referred to as The Ice Age, see the Pleistocene and the Paleolithic period. An ice age is a period of long-term reduction in the temperature of Earth's climate, resulting in an expansion of the continental ice sheets, polar ice sheets and mountain glaciers. Glaciologically, ice age is often used to mean a period of ice sheets in the northern and southern hemispheres; by this definition we are still in an ice age (because the Greenland and Antarctic ice sheets still exist). More colloquially, when speaking of the last few million years, ice age is used to refer to colder periods with extensive ice sheets over the North American and Eurasian continents: in this sense, the most recent ice age ended about 10,000 years ago. This article will use the term ice age in the former, glaciological, sense; glacials for colder periods during ice ages; and interglacials for the warmer periods.
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Noun
1. any period of time during which glaciers covered a large part of the earth's surface; "the most recent ice age was during the Pleistocene"
(synonym) ice age, glacial epoch
(hypernym) period, geological period
(part-holonym) prehistory, prehistoric culture

n. ยุคน้ำแข็ง

B: (Biologi) masa glasial
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