WordReference Random House Unabridged Dictionary of American English © 2026
ge•o•chem•is•try
( jē′ō kem′ə strē),USA pronunciation n.
ge•o•chem•i•cal
( jē′ō kem′i kəl),USA pronunciation adj.
ge′o•chem′i•cal•ly, adv.
ge′o•chem′ist, n.
- Chemistry, Geologythe science dealing with the chemical changes in and the composition of the earth's crust.
- 1900–05; geo- + chemistry
ge′o•chem′ist, n.
'geochemical' also found in these entries (note: many are not synonyms or translations):