Online Google Dictionary

efficacy 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈefikəsē/,
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The ability to produce a desired or intended result,
  1. The ability to produce a desired or intended result
    • - there is little information on the efficacy of this treatment
  1. capacity or power to produce a desired effect; "concern about the safety and efficacy of the vaccine"
  2. (efficacious) marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough"
  3. (efficacious) effective: producing or capable of producing an intended result or having a striking effect; "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"-LewisMumford; "effective teaching methods"; "effective steps toward peace"; "made ...
  4. Efficacy is the capacity to produce an effect. It has different specific meanings in different fields.
  5. Intrinsic activity (IA) or efficacy refers to the relative ability of a drug-receptor complex to produce a maximum functional response. ...
  6. The extent to which an intervention improves the outcome for people under ideal circumstances. Testing efficacy means finding out whether something is capable of causing an effect at all.
  7. A term borrowed from pharmacology describing the maximum response of an administered supplement, regardless of the dose. At a certain point, consuming more of a particular substance fails to elicit any greater effect. ...
  8. (Of a drug or treatment). The maximum ability of a drug or treatment to produce a result regardless of dosage. A drug passes efficacy trials if it is effective at the dose tested and against the illness for which it is prescribed. ...
  9. A measure of the luminous efficiency of a radiant flux, expressed in lumens per watt as the quotient of the total luminous flux by the total radiant flux. For daylighting, this is the quotient of visible flux incident on a surface to radiant flux on that surface. ...
  10. The light output of a light source divided by the total electrical power input to that source, expressed in lumens per watt (LPW, lm/w). This is a measurement of how effective the light source is in converting electrical energy limens of visible light.
  11. The ability of an intervention to produce beneficial results that it is intended to deliver within a research study.
  12. A metric used to compare light output to energy consumption. Efficacy is measured in lumens per watt. Efficacy is similar to efficiency, but is expressed in dissimilar units. For example, if a 100-watt source produces 9000 lumens, then the efficacy is 90 lumens per watt.
  13. The power to produce an effect. Chlorine's efficacy is affected by many factors, including the sun, temperature, water balance and the water's chlorine demand.
  14. Measurement of the efficiency of a light source.
  15. The amount of energy service or useful energy delivered per unit of energy input. Often used in reference to lighting systems, where the visible light output of a luminary is relative to power input; expressed in lumens per Watt; the higher the efficacy value, the higher the energy efficiency.
  16. Able to achieve the desired results or produces beneficial results.
  17. Of a source. Efficacy is the rate at which lamp is able to convert electrical power (watts) into light (lumens), expressed as lumens per watt. Divide light produced (lumens) by the power consumed (watts). Lumens/watts = LPW.
  18. Whether a drug or other treatment works under the best possible conditions. In a research study about efficacy, the study participants are carefully selected, and the researchers can make sure the drug is taken properly and stored properly. ...
  19. Ability of a product to perform the function for which it was designed ^1
  20. How beneficial a test, treatment or public health intervention is under ideal conditions (for example, in a laboratory), compared with doing nothing or opting for another type of care.
  21. A measure of the probability and intensity of beneficial effects.
  22. The extent to which the project's objectives were achieved or expected to be achieved, taking into account their relative importance.
  23. The BMW I have selected for a test drive blows all four tires, stalls out and crashes on the dealer s special runway. I spend two days in the hospital. This is a breakdown in efficacy. See effectiveness.
  24. refers to whether or not the mechanism or compound treats the disease, and whether or not it is able to differentiate over existing treatments
  25. The ability of a drug to produce the desired effect.