What is the meaning of geological period?

noun

  • A unit of geological time during which a system of rocks formed.
    • usage: "ganoid fishes swarmed during the earlier geological periods"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). geological period. Retrieved September 22, 2026, from http://smartdefine.org/geological_period/definitions/1328056
ChicagoWordNet. 2010. "geological period" http://smartdefine.org/geological_period/definitions/1328056 (accessed September 22, 2026).
HarvardWordNet 2010, geological period, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/geological_period/definitions/1328056>.
MLAWordNet. "geological period" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/geological_period/definitions/1328056>