geo·​chem·​is·​try | \ ˌjē-ō-ˈke-mə-strē How to pronounce geochemistry (audio) \

Definition of geochemistry

1 : a science that deals with the chemical composition of and chemical changes in the solid matter of the earth or a celestial body (such as the moon)
2 : the related chemical and geological properties of a substance

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Other Words from geochemistry

geochemical \ ˌjē-​ō-​ˈke-​mi-​kəl How to pronounce geochemical (audio) \ adjective
geochemically \ ˌjē-​ō-​ˈke-​mi-​k(ə-​)lē How to pronounce geochemically (audio) \ adverb
geochemist \ ˌjē-​ō-​ˈke-​mist How to pronounce geochemist (audio) \ noun

Examples of geochemistry in a Sentence

Recent Examples on the Web If confirmed, the finding would point to either of two possibilities: bizarre and wholly unexpected geochemistry on a lifeless Venus or the presence of some form of aerial alien biology in the planet’s clement cloud decks. Leonard David, Scientific American, "Is There Life on Venus? These Missions Could Find It," 23 Sep. 2020 The geochemistry of that frozen ash matched layers of rock fragments, called tephra, associated with an ancient eruption of Mt. Okmok. Kiona N. Smith, Ars Technica, "The volcano that caused famines in ancient Rome? It was in Alaska," 22 June 2020 MOSAiC aims to help fill such gaps by documenting solar radiation levels, plankton populations, geochemistry, clouds, and other factors. Eli Kintisch, Science | AAAS, "Arctic researchers will lock this ship in ice for a year to study the changing polar region," 20 Aug. 2019 The geologists who reported the date last week, here at the Goldschmidt geochemistry conference, also point out a conspicuous coincidence: The impact came at the tail end of a planetwide deep freeze known as Snowball Earth. Eric Hand, Science | AAAS, "Shock and thaw? Earth’s oldest asteroid impact may have helped lift the planet out of a deep freeze," 27 Aug. 2019 Several additional lines of evidence from geochemistry and geophysics support the magma ocean model, which is still being developed today. Erica Jawin, Scientific American, "Apollo’s Bounty: The Science of the Moon Rocks," 2 July 2019 In the early 1990s, Knauth analyzed the geochemistry of the surface of this 1,000-foot layer of dolomite. Peter Byrne, Quanta Magazine, "Early Life in Death Valley," 24 Apr. 2014 That has allowed them to determine the aquifer's size and depth, as well as the geochemistry of its water. Isaiah Esipisu, The Christian Science Monitor, "In sustainability search, Kenya studies the unknown depths of its aquifers," 2 July 2018 In any case, Webster said the methane apparently works its way into the atmosphere from sub-surface reservoirs of some sort, places where non-biological geochemistry is going on or where microbial life might somehow flourish. William Harwood, CBS News, "NASA's Curiosity rover finds potential building blocks of life on Mars," 8 June 2018

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

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First Known Use of geochemistry

1902, in the meaning defined at sense 1

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Time Traveler for geochemistry

Time Traveler

The first known use of geochemistry was in 1902

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Statistics for geochemistry

Last Updated

6 Oct 2020

Cite this Entry

“Geochemistry.” Dictionary, Merriam-Webster, Accessed 23 Oct. 2020.

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More Definitions for geochemistry


geo·​chem·​is·​try | \ ˌjē-ō-ˈke-mə-strē How to pronounce geochemistry (audio) \

Kids Definition of geochemistry

: a science that deals with the chemical composition of and chemical changes in the earth's crust

More from Merriam-Webster on geochemistry

Nglish: Translation of geochemistry for Spanish Speakers Encyclopedia article about geochemistry

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