po·ten·cy 
/ˈpoʊtn̩si/ noun
plural po·ten·cies /ˈpoʊtn̩si/ noun 1 [noncount] : the power to influence someone
▪ Her words had potency. — often + of ▪ I can't deny the potency of his argument. 2 : the strength or effectiveness of something [count] ▪ drugs of high potencies [noncount] ▪ vitamins of high potency 3 [noncount] : the ability of a man to have sex
▪ The drug can improve sexual potency.
▪ Her words had potency. — often + of ▪ I can't deny the potency of his argument.
▪ The drug can improve sexual potency.
