ice age

IPA: ˈaɪsˈeɪdʒ

(sciences) A period of long-term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence of major polar ice sheets that reach the ocean and calve icebergs.
(colloquial) Any of several glacial periods (within a scientific ice age) marked by episodes of extensive glaciation alternating with episodes of relative warmth (interglacial).
Alternative letter-case form of ice age [(sciences) A period of long-term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence of major polar ice sheets that reach the ocean and calve icebergs.]

Examples of "ice-age" in Sentences

Explanation of ice-age cycling: A David Archer cocktail.
The ice-age of no dialogue between minds, hearts and spirits has begun.
That we were Warming, but now not Warming, YET NOT COOLING AS FAST AS WE SHOULD BE (IF we are indeed in that supposed “ice-age return trend”) is proof that we are Warming.
Lesley VicatBromley, Kent• We shouldn't be surprised that ice-age inhabitants of a Somerset cave used skulls as drinking vessels Report, 17 February: it wasn't uncommon in Wales into recent times.
A new visitor's center at the site — displaying ice-age mammoth tusks and unused bombs dumped in the sea by World War II British planes returning from Germany — had been expected to draw 60,000 tourists this year.
Although our findings seemingly conflict with the eustatic sea-level curve of far-field sites, they corroborate an alternative view that MIS 5a was at least as ice-free as the present, and they challenge the prevailing view of MIS 5 sea-level history and certain facets of ice-age theory.