1. a scientist who studies the chemical composition and processes of the Earth and other planets

Examples

• The geochemist analyzed rock samples from the volcanic eruption.
• She works as a geochemist for an oil exploration company.
• The geochemist discovered unusual mineral deposits in the cave.
• Marine geochemists study the chemistry of ocean sediments.
• The geochemist used advanced instruments to measure trace elements.
• A team of geochemists investigated the contaminated groundwater.