geochemical

[jee-oh-kem-uh-stree]

ge·o·chem·is·try

[jee-oh-kem-uh-stree]
noun
the science dealing with the chemical changes in and the composition of the earth's crust.

Origin:
1900–05; geo- + chemistry

ge·o·chem·i·cal [jee-oh-kem-i-kuhl] , adjective
ge·o·chem·i·cal·ly, adverb
ge·o·chem·ist, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Geochemical is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
the offspring of a zebra and a donkey.
Collins
World English Dictionary
geochemistry (ˌdʒiːəʊˈkɛmɪstrɪ)
 
n
the geology and chemistry concerned with the chemical composition of, and chemical reactions taking place within, the earth's crust
 
geochemical
 
adj
 
geo'chemist
 
n

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