- The extent to which time is well used for the intended task.
- The of the planning department is deplorable.
- The extent to which a resource, such as electricity, is used for the intended purpose.
- The of this loudspeaker is 40%.
- A one room apartment.
- I have an available June through July.
- Dutch: efficií«ntie
- French: rendement
- German: Effizienz
- Portuguese: eficiíªncia
- Spanish: eficiencia
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