efficiency
(noun)
noun
1. the ratio of the output to the input of any system
Definition categories: link, ratio
2. skillfulness in avoiding wasted time and effort
- she did the work with great efficiency
Definition categories: thought, skillfulness
Sentences with efficiency as a noun:
- The efficiency of the planning department is deplorable.
- The efficiency of this loudspeaker is 40%.
- I have an efficiency available June through July.