Glacial period

Glacial period
Glacial Gla"cial, a. [L. glacialis, from glacies ice: cf. F. glacial.] 1. Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. --Lyell. [1913 Webster]

2. (Chem.) Resembling ice; having the appearance and consistency of ice; -- said of certain solid compounds; as, glacial phosphoric or acetic acids. [1913 Webster]

{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}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Glacial period — A glacial period is an interval of time within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate within an ice age. The last glacial period ended about 10,000 to …   Wikipedia

  • glacial period — noun 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: ↑ice age, ↑glacial epoch • Hypernyms: ↑period, ↑geological period • Part Holonyms …   Useful english dictionary

  • glacial period — noun a period in the earth s history when ice sheets were unusually extensive; an ice age …   English new terms dictionary

  • glacial period — ice age, time when the earth was covered with glaciers …   English contemporary dictionary

  • Last glacial period — Last glacial redirects here. For the period of maximum glacier extent during this time, see Last Glacial Maximum. The last glacial period was the most recent glacial period within the current ice age occurring during the last years of the… …   Wikipedia

  • Glacial — Gla cial, a. [L. glacialis, from glacies ice: cf. F. glacial.] 1. Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. Lyell. [1913 Webster] 2. (Chem.) Resembling ice; having the …   The Collaborative International Dictionary of English

  • Glacial acid — Glacial Gla cial, a. [L. glacialis, from glacies ice: cf. F. glacial.] 1. Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. Lyell. [1913 Webster] 2. (Chem.) Resembling ice;… …   The Collaborative International Dictionary of English

  • Glacial drift — Glacial Gla cial, a. [L. glacialis, from glacies ice: cf. F. glacial.] 1. Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. Lyell. [1913 Webster] 2. (Chem.) Resembling ice;… …   The Collaborative International Dictionary of English

  • Glacial epoch — Glacial Gla cial, a. [L. glacialis, from glacies ice: cf. F. glacial.] 1. Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. Lyell. [1913 Webster] 2. (Chem.) Resembling ice;… …   The Collaborative International Dictionary of English

  • Glacial hypothesis — Glacial Gla cial, a. [L. glacialis, from glacies ice: cf. F. glacial.] 1. Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. Lyell. [1913 Webster] 2. (Chem.) Resembling ice;… …   The Collaborative International Dictionary of English

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