The story
From pharmaco- + environment + -ology.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: a branch of pharmacology and pharmacovigilance that deals entry of chemicals or drugs into the environment after elimination from humans and animals as post-therapy. It deals specifically with those pharmacological agents that have impact on the environment via elimination through living organisms subsequent to pharmacotherapy. Full definition →
From pharmaco- + environment + -ology.
Etymology from Wiktionary, CC BY-SA 4.0.