1. Noun
The quality of being efficient or producing an effect or effects; efficient power; effectual agency.
2. Noun
The ratio of useful work to energy expended.
3. noun
How much useful result is produced from the resources used.
The ratio of useful output to the total input used by a process or system.
4. Noun
skillfulness in avoiding wasted time and effort; "she did the work with great efficiency"
Vocabulary classified under Environmental science
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