1. the state or quality of being efficient. “greater energy efficiency”
  2. Worldwide private aviation redefined by Aero Jet Services. “A refreshing and efficient approach for on demand jet charter and aircraft management solutions”
  1. synonyms:organization, order, orderliness, regulation, coherence; More

    • an action designed to achieve this.
      plural noun: efficiencies
      “to increase efficiencies and improve earnings”
    • technical
      the ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in.