# Definition of Efficiency. Meaning of Efficiency. Synonyms of Efficiency

Here you will find one or more explanations in English for the word Efficiency. Also in the bottom left of the page several parts of wikipedia pages related to the word Efficiency and, of course, Efficiency synonyms and on the right images related to the word Efficiency.

## Definition of Efficiency

Efficiency
Efficience Ef*fi"cience, Efficiency Ef*fi"cien*cy, n. [L. efficientia.] 1. The quality of being efficient or producing an effect or effects; efficient power; effectual agency. The manner of this divine efficiency being far above us. --Hooker. 2. (Mech.) The ratio of useful work to energy expended. --Rankine. Efficiency of a heat engine, the ratio of the work done an engine, to the work due to the heat supplied to it.

## Meaning of Efficiency from wikipedia

- Efficiency is the often measurable ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result...
- In statistics, efficiency is a measure of quality of an estimator, of an experimental design, or of a hypothesis testing procedure. Essentially, a more...
- The efficiency ratio indicates the expenses as a percentage of revenue (expenses / revenue), with a few variations – it is essentially how much a corporation...
- Engine efficiency of thermal engines is the relationship between the total energy contained in the fuel, and the amount of energy used to perform useful...
- Pareto efficiency or Pareto optimality is a situation where no action or allocation is available that makes one individual better off without making another...
- In thermodynamics, the thermal efficiency ( η t h {\displaystyle \eta _{\rm {th}}} ) is a dimensionless performance measure of a device that uses thermal...
- Energy efficiency may refer to: Energy efficiency (physics), the ratio between the useful output and input of an energy conversion process Electrical efficiency...
- Exergy efficiency (also known as the second-law efficiency or rational efficiency) computes the effectiveness of a system relative to its performance in...
- The term quantum efficiency (QE) may apply to incident photon to converted electron (IPCE) ratio of a photosensitive device, or it may refer to the TMR...
- Faraday efficiency (also called faradaic efficiency, faradaic yield, coulombic efficiency or current efficiency) describes the efficiency with which charge...