— biogeochemical /buy'oh jee'oh kem"i keuhl/ , adj.
/buy'oh jee'oh kem"euh stree/ , n.
the science dealing with the relationship between the geochemistry of a given region and its flora and fauna, including the circulation of such elements as carbon and nitrogen between the environment and the cells of living organisms.
[ 1935-40; BIO- + GEOCHEMISTRY ]