effectivity
UK /əˈfek.tɪv.ə.t̬i/ US /əˈfek.tɪv.ə.t̬i/
noun 3
Definitions
noun
1
The ability or power to be effective.
2
A measure of the effectiveness of something.
3
[Technical documentation] An indication of the product, procedure, or timescale for which an item of information is applicable or effective.
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