geophagist
/ˌdʒiːəʊˈfæɡɪst/Definitions
1. noun
A person who eats earth or clay, especially as a form of psychosomatic coping mechanism or nervous habit.
“The geophagist’s behavior was a sign of her anxiety and stress.”
2. noun
One who studies or collects geological data, especially from eating the earth.
“The geophagist’s research on soil composition provided valuable insights to the local agricultural community.”