GLACIAL PERIOD • DICTIONARY ONE.COM • Definition of Glacial period

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/glˈeɪʃəl pˈɪriəd/ Listen

adjective

Glacial adj.

Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena.

(Chem.) Resembling ice; having the appearance and consistency of ice; said of certain solid compounds; as, glacial phosphoric or acetic acids.

Glacial acid (Chem.), an acid of such strength or purity as to crystallize at an ordinary temperature, in an icelike form; as acetic or carbolic acid.

Glacial drift (Geol.), earth and rocks which have been transported by moving ice, land ice, or icebergs; bowlder drift.

Glacial epoch or Glacial period (Geol.), 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.

Glacial theory or Glacial hypothesis. (Geol.) See Glacier theory, under Glacier.

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Etymology of 'Glacial period'

Collaborative International Dictionary of English 0.48

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"Glacial period" Quotes from Famous Books

... Lubbock also records his assent to these views. He says on this point: "It is, I think, more than probable that the advent of the Glacial Period found man ...

— The Prehistoric World - Vanished Races • E. A. Allen