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Examples of geologic time in a Sentence
Recent Examples on the Web
The section on geologic time explores how educators like Hitchcock described estimations of the earth’s age by delineating geologic strata in long, colorful maps, as well as painstakingly drawing assemblages of fossils to understand and disseminate the human discoveries of ancient life.
—Anne Wallentine, Smithsonian Magazine, 8 Oct. 2024
For instance, the theory of plate tectonics—that the planet’s surface is composed of rocky plates that move around over geologic time—wasn’t widely accepted until the mid-1960s.
—Rudy Molinek, Smithsonian Magazine, 13 Aug. 2024
Research from paleoclimate scientists — who use tree rings, ice cores, lake sediments and other ancient material to understand past environments — suggests that recent heat would have been all but impossible over the last stretch of geologic time.
—Sarah Kaplan, Washington Post, 23 July 2024
Furthermore, our findings support the idea that bioluminescence has been a critical form of communication through geologic time for many types of animals, particularly in the deep sea.
—Discover Magazine, 19 June 2024
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Word History
First Known Use
1861, in the meaning defined above
Dictionary Entries Near geologic time
Cite this Entry
“Geologic time.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geologic%20time. Accessed 22 Dec. 2024.
Kids Definition
geologic time
noun
: the long period of time marked by events in the earth's geological history
More from Merriam-Webster on geologic time
Britannica.com: Encyclopedia article about geologic time
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