geologic time

noun

: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Just below one rocky summit, Roberto de la Cerda, one of Explora’s guides, showed us how to read the mountainsides as open ledgers of geologic time. Michael Snyder, Travel + Leisure, 14 June 2025 Conditions on Earth shift over geologic time, and those forces inevitably lead to some dead ends on the tree of life. Lauren Leffer, Popular Science, 29 May 2025 This literal wrinkle in geologic time stretches nearly 100 miles across southern Utah, past incredible hikes and alluring slot canyons. Maya Silver, Outside Online, 2 May 2025 Readers will enjoy a tour through geologic time, discovering how plants and animals evolved. Richard Horan, The Christian Science Monitor, 7 Mar. 2025 See All Example Sentences for geologic time

Word History

First Known Use

1861, in the meaning defined above

Time Traveler
The first known use of geologic time was in 1861

Browse Nearby Words

Cite this Entry

“Geologic time.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geologic%20time. Accessed 28 Jun. 2025.

Kids Definition

geologic time

noun
: the long period of time marked by events in the earth's geological history
geologic time table

More from Merriam-Webster on geologic time

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!