EFFICACY


Meaning of EFFICACY in English

ef ‧ fi ‧ ca ‧ cy /ˈefəkəsi, ˈefɪkəsi/ BrE AmE noun [uncountable + of]

formal the ability of something to produce the right result SYN effectiveness OPP inefficacy

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.