geological

adjective

geo·​log·​i·​cal ˌjē-ə-ˈlä-ji-kəl How to pronounce geological (audio)
variants or less commonly geologic
ˌjē-ə-ˈlä-jik How to pronounce geological (audio)
: of, relating to, or based on geology
geologically
ˌjē-ə-ˈlä-ji-k(ə-)lē How to pronounce geological (audio)
adverb

Examples of geological in a Sentence

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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.
Finland’s nuclear safety regulator, STUK, issued a favorable safety review on August 4 for a deep geological repository located in Olkiluoto. — Aman Tripathi, Interesting Engineering, 5 Aug. 2026 The lives had layers, like the geological strata of the canyon’s walls. — Nick Paumgarten, New Yorker, 3 Aug. 2026 For example, in Argentina’s lithium-rich Jujuy Province, a research exchange between the two countries’ geological agencies grew into an explicit state partnership focused on surveying the province’s salt flats. — Natalia Cote-Muñoz, Foreign Affairs, 3 Aug. 2026 Further study could help shed light on how the microscopic world has persisted through major periods of geological and climatic transformation. — Adam Kovac, Scientific American, 3 Aug. 2026 See All Example Sentences for geological

Word History

Etymology

see geology

First Known Use

circa 1723, in the meaning defined above

Time Traveler
The first known use of geological was circa 1723

Rhymes for geological

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Browse Nearby Words

geologer
geological
geological age
See all Nearby Words

Cite this Entry

“Geological.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geological. Accessed 7 Aug. 2026.

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