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Period of glaciation
Answer for the clue "Period of glaciation ", 7 letters:
ice age
Word definitions for ice age in dictionaries
Wikipedia
Word definitions in Wikipedia
An ice age is a period of long-term reduction in the temperature of Earth 's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers . Within a long-term ice age, individual pulses of cold climate ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Ice \Ice\ ([imac]s), n. [OE. is, iis, AS. [=i]s; aksin to D. ijs, G. eis, OHG. [=i]s, Icel. [=i]ss, Sw. is, Dan. iis, and perh. to E. iron.] Water or other fluid frozen or reduced to the solid state by cold; frozen water. It is a white or transparent colorless ...
Wiktionary
Word definitions in Wiktionary
n. Any of several cold periods in the history of the earth marked by episodes of extensive glaciation alternating with episodes of relative warmth.
WordNet
Word definitions in WordNet
n. 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" [syn: glacial period , glacial epoch ]
Usage examples of ice age.
It looked thirteen, but the lips smiled a cool self-infatuated seventeen, while the gleaming deep eye-pools were first blue melt of the Ice Age.
The _Dolphin_, I had to admit, made any British submarine I'd ever seen look like a relic from the Ice Age.
They'll have full status in a few millennia, and they'll keep it, once they're assured of a cultural foundation that's not going to be shattered by a new ice age every time it gets started.
The problem is we're still in the interglacial warming that began at the end of the last Ice Age, and that warming sends what we call a thermal pulse down through the polar ice sheets.
The flood was an accident, a geological catastrophe like an ice age or a meteor impact.