Test Your Vocabulary

Take Our 10-Question Quiz

Name That Thing

Take our visual vocab quiz

Test Your Knowledge »

True or False?

A quick quiz about stuff worth knowing

Take It Now »

Join Us on FB & Twitter

Get the Word of the Day and More

Facebook | Twitter

efficiency

14 ENTRIES FOUND:

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

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

Browse

Next Word in the Dictionary: efficiency apartment
Previous Word in the Dictionary: efficience
All Words Near: efficiency

Seen & Heard

What made you want to look up efficiency? Please tell us where you read or heard it (including the quote, if possible).