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countable and uncountable, plural efficiencies
The extent to which time is well used for the intended task. quotations examples
The display and result must be placed in the context that was it was against a side that looked every bit their Fifa world ranking of 141 - but England completed the job with efficiency to record their biggest away win in 19 years.
2012 September 7, Phil McNulty, “Moldova 0-5 England”, in BBC Sport
(dated) The quality of producing an effect or effects. quotations examples
The manner of this divine efficiency being far above us.
1594–1597, Richard Hooker, edited by J[ohn] S[penser], Of the Lawes of Ecclesiastical Politie, […], London: […] Will[iam] Stansby [for Matthew Lownes], published 1611, (please specify the page)
The extent to which a resource is used for the intended purpose; the ratio of useful work to energy expended. examples
(US) A one-room apartment. examples