Definitions
Century Dictionary and Cyclopedia
- n. The quality of being effective. Synonyms Effectiveness, Efficiency, Efficacy, Effectualness. The same differences obtain among these words as among effective, efficient, efficacious, and effectual. (See comparison under effective.) Effectualness is less often used, on account of its awkwardness.
Wiktionary
- n. The property of being effective
- n. The ability to be effective.
- n. The degree to which something is effective.
GNU Webster's 1913
- n. The quality of being effective.
WordNet 3.0
- n. power to be effective; the quality of being able to bring about an effect
- n. capacity to produce strong physiological or chemical effects
Examples
“I think that any small drop in effectiveness is more than countered by the benefits of open, realistic government.”
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“Research, such as that by William Sanders and Eric Hanushek, shows that teacher effectiveness is the most important in-school factor affecting student learning.”
How Can the Achievement Gap Be Closed? A Freakonomics Quorum - Freakonomics Blog - NYTimes.com
“But the key to their effectiveness is their rattle, and it's not just the noise, but also how it is made.”
“The only way to do that with any cost effectiveness is to do the hard work required to bring the price of electricity down, so that people can go a few hundred miles (they will need a comparable distance) and plug it into their houses without breaking the bank at the end of the day.”
“And since the .270,. 30-06 and 7mag (usually Remington) are considered the Top 3 big game rounds, and are practically equal in effectiveness when it comes to whitetail/mule deer/caribou and even elk sized animals (with proper bullets), their shares of 12, 11 and 11% overall are close enough to be almost identical.”
“We have used both of them before, and there doesn't seem to be any difference in effectiveness between those two brands.”
“These resources, applied against the drug producers and distributors, could make a very important difference in effectiveness of efforts to curtail this illegal industry.”
“Nonetheless, conclusive evidence about a treatment's effectiveness is rarely found in a single study.”
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“Then ARVs advanced in effectiveness and steadily dropped in toxicity and price.”
The Huffington Post: Ray Suarez: Reporter's Notebook: A Clinic's Strains in Mozambique
“So I don't really see how assessing effectiveness is going to stifle innovation.”
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