Definition of pharmacology noun from the Oxford Advanced Learner's Dictionary

 

pharmacology

 noun
noun
BrE BrE//ˌfɑːməˈkɒlədʒi//
 
; NAmE NAmE//ˌfɑːrməˈkɑːlədʒi//
 
[uncountable]
 
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the scientific study of drugs and their use in medicine Word Origin early 18th cent.: from modern Latin pharmacologia, from Greek pharmakon ‘drug’.
See the Oxford Advanced American Dictionary entry: pharmacology