geologic time


Definition of geologic time

: the long period of time occupied by the earth's geologic history
geologic time table

Examples of geologic time in a Sentence

Recent Examples on the Web The lava flows that formed Craters of the Moon are fairly recent in geologic time, the most recent eruption just 2,000 years ago, expert believe. Fox News, 29 June 2022 Yes, make them and not only synthesize them, and analyze them outside of the cell, but also genetically modify the organisms with these ancient DNA molecules, to study the evolution of these genes in tandem with the organism over geologic time. Quanta Magazine, 1 June 2022 Water in the Bonneville basin over geologic time has risen and fallen repeatedly. The Salt Lake Tribune, 20 May 2022 Apart from the occasional cattle ranch or sheep-herding camp, the landscape appears desolate and lonely, forgotten in the expanse of geologic time. Matt Stirn, Smithsonian Magazine, 31 Mar. 2022 But that’s only 13,000 years, hardly the blink of an eye in geologic time. Dennis Pillion |, al, 29 Dec. 2021 Arbic, a co-author on the new paper, wondered whether changing day length could have affected photosynthesis over geologic time. Julia Rosen, Scientific American, 8 Nov. 2021 Paleontologists have determined the fossil could be anywhere from 295 million to 305 million years old, between the Pennsylvanian and the Permian geologic time periods. Sherry Liang, CNN, 5 Nov. 2021 Fossil fuel: Combustible fuels that formed over geologic time scales from decaying plant and animal matter. Washington Post, 10 Aug. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geologic time.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of geologic time

1861, in the meaning defined above

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The first known use of geologic time was in 1861

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Dictionary Entries Near geologic time

geologic thermometer

geologic time


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Statistics for geologic time

Last Updated

7 Jul 2022

Cite this Entry

“Geologic time.” Dictionary, Merriam-Webster, Accessed 9 Aug. 2022.

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