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Definition of effectiveness noun from the Oxford Advanced Learner's Dictionary

effectiveness

noun
 OPAL W
 
/ɪˈfektɪvnəs/
 
/ɪˈfektɪvnəs/
(also less frequent effectivity
 
/ɪˌfekˈtɪvəti/
 
/ɪˌfekˈtɪvəti/
)
[uncountable]
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  1. the fact of producing the result that is wanted or intended; the fact of producing a successful result
    • to check the effectiveness of the security system
    see also cost-effectiveness opposite ineffectivenessTopics Successc1, Change, cause and effectc1
See effectiveness in the Oxford Learner's Dictionary of Academic English
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dizzy
adjective
 
 
From the Topic
Health problems
C1
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