efficiency.

1. The ability to achieve useful results while minimizing wasted resources, effort, or time.

2. A small apartment combining main living functions in one room, usually with a cooking area.

Use it for

Words that belong together

• operational efficiency
• energy efficiency

On the page

The redesign improved operational efficiency.

The study measured energy efficiency.

Speed alone did not establish overall efficiency.

Usage notes

Primary category: academic. Forms: Usually mass; efficiencies for improvements or distinct instances. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.