Definition of "efficacies" [efficacies]

• Plural form of efficacy. (noun)

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• "As a result, there are a lot of different methods of weight-loss with varying efficacies for any individual."
• "From Writers Bloc: Nora Ephron, in her new book, "I Remember Nothing," reflects on issues women care about a lot: email, big decisions about men, the efficacies of chicken soup, money, and so much more."
• "To simply contemplate the myriad factors affecting just one person's encounter with disease — for example, his or her personal character, the belief systems of the period, the efficacies of the current medical system, the severity and length of illness, access to medical care, and the level of the individual's material life — would probably be enough to discourage even the most ambitious historian, even if she could uncover enough evidence."