Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Geology The doctrine that major changes in the earth's crust result from catastrophes rather than evolutionary processes.
  • n. The prediction or expectation of cataclysmic upheaval, as in political or social developments.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The doctrine that sudden catastrophes, rather than continuous change, cause the main features of the Earth's crust

from the GNU version of the Collaborative International Dictionary of English

  • n. The doctrine that the geological changes in the earth's crust have been caused by the sudden action of violent physical causes; -- opposed to the doctrine of uniformism.

from The Century Dictionary and Cyclopedia

  • n. The theoretical view of geological events which has as its essential basis the idea of a succession of catastrophes: the opposite of uniformitarianism. See catastrophe, 3, and cataclysm, 2.

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