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    Privacy˙Terms˙
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    efficacy

    US /ˈɛfɪkəsi/

    ・

    UK /ˈefɪkəsi/

    B2TOEIC
    n. (u.)Uncountable NounAbility to produce a desired outcome
    The employee's efficacy impressed his boss

    Video subtitles

    Why Are There Stones Along Railway Tracks?

    05:40Why Are There Stones Along Railway Tracks?
    • Track ballast helps keep this heat expansion to a safe minimum, ensuring the efficacy and safety of the track. 

      Track ballast helps keep this heat expansion to a safe minimum, ensuring the efficacy and safety of the track. 

    • keep this heat expansion to a safe minimum,  ensuring the efficacy and safety of the track. 

      keep this heat expansion to a safe minimum,  ensuring the efficacy and safety of the track. 

    B2

    Why L.A.’s Trains Can Take 4x Longer Than Driving | WSJ Pro Perfected

    07:56Why L.A.’s Trains Can Take 4x Longer Than Driving | WSJ Pro Perfected
    • Though the battle between efficacy and efficiency is constant, Joshua expects any additions will help to increase ridership.

      Though the battle between efficacy and efficiency is constant, Joshua expects any additions will help to increase ridership.

    • Though the battle between efficacy and efficiency is constant, Joshua expects any additions will help to increase ridership.

      Though the battle between efficacy and efficiency is constant, Joshua expects any additions will help to increase ridership.

    B1

    Can Ukraine still win the war against Russia? | BBC News

    05:25Can Ukraine still win the war against Russia? | BBC News
    • And we've seen recently the efficacy of the F-16s with the French missiles that have been very effective in hitting command and control structures of the Russians.

      And we've seen recently the efficacy of the F-16s with the French missiles that have been very effective in hitting command and control structures of the Russians.

    • They still and we've seen recently the efficacy of the F-16s with the French missiles that have been very effective in hitting command and control structures of the Russians.

      They still and we've seen recently the efficacy of the F-16s with the French missiles that have been very effective in hitting command and control structures of the Russians.

    B1

    Bempedoic Acid and Cardiovascular Outcomes | NEJM

    02:22Bempedoic Acid and Cardiovascular Outcomes | NEJM
    • A recent trial examined the efficacy and safety of bempedoic acid, an ATP citrate lyase inhibitor, that reduces LDL cholesterol, for preventing cardiovascular events in patients with statin intolerance.

      A recent trial examined the efficacy and safety of bempedoic acid, an ATP citrate lyase inhibitor, that reduces LDL cholesterol, for preventing cardiovascular events in patients with statin intolerance.

    • A recent trial examined the efficacy and safety of bempedoic acid, an ATP citrate lyase inhibitor, that reduces LDL cholesterol for preventing cardiovascular events in patients with statin intolerance.

      A recent trial examined the efficacy and safety of bempedoic acid, an ATP citrate lyase inhibitor, that reduces LDL cholesterol for preventing cardiovascular events in patients with statin intolerance.

    B2

    Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson | Full Audiobook

    28:58Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson  | Full Audiobook
    • be most probable. The evil side of my nature, to  which I had now transferred the stamping efficacy,  

      be most probable. The evil side of my nature, to  which I had now transferred the stamping efficacy,  

    • The evil side of my nature, to which I had now transferred the stamping efficacy, was less robust and less developed than the good which I had just deposed.

      The evil side of my nature, to which I had now transferred the stamping efficacy, was less robust and less developed than the good which I had just deposed.

    B1

    Let's Talk About Sister Krone

    15:51Let's Talk About Sister Krone
    • Not only does Western anime criticism have an incredibly low efficacy in that regard, it isn't even common outside anime.

      Not only does Western anime criticism have an incredibly low efficacy in that regard, it isn't even common outside anime.

    • Not only does Western anime criticism have an incredibly low efficacy in that regard,

      Not only does Western anime criticism have an incredibly low efficacy in that regard,

    B2

    Peter Joseph on Media & Occupy Wall Street | 'Russia Today' Oct 27, 2011 [The Zeitgeist Movement]

    07:26Peter Joseph on Media & Occupy Wall Street |  'Russia Today' Oct 27, 2011 [The Zeitgeist Movement]
    • So just as we build an airplane with a very specific design, you can't have too much deviation on that or you might injure the efficiency or the efficacy of that airplane, we have to construct society technically.

      So just as we build an airplane with a very specific design, you can't have too much deviation on that or you might injure the efficiency or the efficacy of that airplane, we have to construct society technically.

    • or you might injure the efficiency or efficacy of that airplane)

      or you might injure the efficiency or efficacy of that airplane)

    B1

    CRISPR-based gene editing revolutionized medicine—what's next?

    05:10CRISPR-based gene editing revolutionized medicine—what's next?
    • And then finally these pieces all come together and you would assess the efficacy and the potency of the therapy that you've developed.

      And then finally these pieces all come together and you would assess the efficacy and the potency of the therapy that you've developed.

    • And then finally these pieces all come together and you would assess the efficacy and the potency of the therapy that you've developed.

      And then finally these pieces all come together and you would assess the efficacy and the potency of the therapy that you've developed.

    B2

    Bad Personal Statement Examples (How a Doctor Would Fix Them)

    10:54Bad Personal Statement Examples (How a Doctor Would Fix Them)
    • Describing all that I knew about the microbe's pathogenesis and explaining how my research could improve vaccine efficacy was comforting to the family.

      Describing all that I knew about the microbe's pathogenesis and explaining how my research could improve vaccine efficacy was comforting to the family.

    • Describing all that I knew about the microbe's pathogenesis and explaining how my research could improve vaccine efficacy was comforting to the family.

      Describing all that I knew about the microbe's pathogenesis and explaining how my research could improve vaccine efficacy was comforting to the family.

    B1

    Power of Humor in Public Speaking

    12:20Power of Humor in Public Speaking
    • And this is what we all, our classmates, did during the GSB Show regarding the efficacy of the administration.

      And this is what we all, our classmates, did during the GSB Show regarding the efficacy of the administration.

    • show regarding the efficacy of the administration.

      show regarding the efficacy of the administration.

    B1