Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The chronology of the earth's history as determined by geologic events.

from The Century Dictionary.

  • noun Geologic chronology; the application of time measures to geologic succession.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun uncountable The science of dating samples of rock or sediment.
  • noun countable Any one of the methods by which the age of different samples of rock can be determined.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

geo- +‎ chronology

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