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Definitions from the Web

Efficiency

Noun: The state or quality of being efficient; the ability to accomplish a task with the least waste of time, effort or resources.

Example Sentence: The efficiency of the new manufacturing process significantly reduced production time and cost.

Adjective: Describing something that is effective and produces desired results with minimal waste.

Example Sentence: This energy-efficient light bulb helps to save electricity and is cost-effective in the long run.

Related Products: Find books and resources on efficiency at Amazon.