Definition of "glacial epoch" []

• A period during which the climate of the modern temperate regions was polar, and ice covered large portions of the northern hemisphere to the mountain tops. (adjective)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "When the high excentricity passed away the glacial epoch also passed away in the Temperate zone; but it persists in the Arctic zone, where during the Miocene there were mild climates, and this is due to the persistence of the changed geographical conditions."