Origin: Greek suffix -ology
Toxicology has 2 different meanings across 1 category:
the branch of pharmacology that deals with the nature and effects and treatments of poisons
"The forensic scientist applied his expertise in toxicology to determine how much arsenic was present in the victim's remains."
The branch of pharmacology that deals with the nature, effect, detection and treatment of poisons and poisoning.
"The toxicologist analyzed the blood sample to determine if the patient's symptoms were caused by a lethal dose of arsenic or another common household poison."