efficiency

ef·fi·cien·cy

noun \i-ˈfi-shən-sē\

plural ef·fi·cien·cies

Definition of EFFICIENCY

1

: the quality or degree of being efficient

2

a : efficient operation b (1) : effective operation as measured by a comparison of production with cost (as in energy, time, and money) (2) : the ratio of the useful energy delivered by a dynamic system to the energy supplied to it

3

: efficiency apartment

Examples of EFFICIENCY

1. Because of her efficiency, we got all the work done in a few hours.
2. The factory was operating at peak efficiency.
3. A furnace with 80 percent fuel efficiency wastes 20 percent of its fuel.
4. The company is trying to lower costs and improve efficiencies.

First Known Use of EFFICIENCY

1633

Related to EFFICIENCY

Synonyms: edge, effectiveness, effectualness, efficaciousness, efficacity, efficacy, productiveness

Antonyms: ineffectiveness, ineffectuality, ineffectualness, inefficiency

Related Words: ability, capability, capacity; potency, puissance, strength

Near Antonyms: inability, inadequacy, inadequateness, incompetence, incompetency

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