[ jee-oh-kem-uh-stree ]
/ ˌdʒi oʊˈkɛm ə stri /


the science dealing with the chemical changes in and the composition of the earth's crust.

Origin of geochemistry

First recorded in 1900–05; geo- + chemistry

Related forms

ge·o·chem·i·cal [jee-oh-kem-i-kuh l] /ˌdʒi oʊˈkɛm ɪ kəl/, adjectivege·o·chem·i·cal·ly, adverbge·o·chem·ist, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for geochemistry


/ (ˌdʒiːəʊˈkɛmɪstrɪ) /


the geology and chemistry concerned with the chemical composition of, and chemical reactions taking place within, the earth's crust

Derived Forms

geochemical (ˌdʒiːəʊˈkɛmɪkəl), adjectivegeochemist, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for geochemistry


[ jē′ō-kĕmĭ-strē ]

The scientific study of the chemical composition of the Earth or other celestial body and of the reactions that control the distribution of chemical elements in its minerals, rocks, soil, waters, and atmosphere.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.