IPA: /ˌdʒiːoʊˈkɛmɪkəl/
KK: /dʒiˈoʊkɛmɪkəl/
Relating to the study of the chemical composition and processes of the Earth and its rocks, soils, and waters.
The geochemical analysis revealed important information about the mineral content of the soil.
Geochemical → It is formed from "geo-" (from Greek "gē", meaning earth) and "chemical" (from Greek "khēmeia", meaning the art of transmuting metals). The word "geochemical" refers to the chemical processes and substances that occur within the Earth.
Think of 'geo-' meaning 'earth' and 'chemical' relating to the art of transforming substances. This helps you remember that geochemical involves the chemistry of the Earth.