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in the PONS Dictionary

ef·fi·cien·cy [ɪˈfɪʃən(t)si] N

1. efficiency no pl (proficiency):

efficiency of a company
Leistungsfähigkeit f <-> kein pl
efficiency of a system
Effizienz f <-, -en> form
efficiency of a system
Leistungsfähigkeit f <-> kein pl
efficiency of a person
Tüchtigkeit f <->
efficiency of a method
Wirksamkeit f <->
efficiency of a method
Effizienz f <-, -en> form

2. efficiency no pl (frugality):

efficiency
Wirtschaftlichkeit f <->
efficiency
Effizienz f <-, -en> form
energy efficiency
sparsame Energieverwendung

3. efficiency spec (of a machine, an engine):

efficiency
Wirkungsgrad m <-(e)s, -e> spec

4. efficiency Am (apartment):

efficiency
kleines Apartment

efficiency N CTRL

efficiency
Wirtschaftlichkeit f
efficiency
Effizienz f
efficiency
Wirksamkeit f
efficiency
Produktivität f

efficiency N MKTG

efficiency
Leistungsfähigkeit f

combustion efficiency [kəmˈbʌstʃnɪˌfɪʃnsi], efficiency N

combustion efficiency
Wirkungsgrad

cost ef·ˈfi·cien·cy N

cost efficiency
Kosteneffizienz f

ef·ˈfi·cien·cy apart·ment N Am

efficiency apartment
kleines Apartment

ef·ˈfi·cien·cy plan·ning N no pl

efficiency planning
Wirtschaftlichkeitsplanung f

ef·ˈfi·cien·cy ra·tio N

efficiency ratio
Rentabilitätskennzahl f

ˈheat ef·fi·cien·cy N SCIENCE

heat efficiency
Wärmewirkungsgrad m

la·bor ef·ˈfi·cien·cy N no pl Am

labor efficiency → labour efficiency

la·bour ef·ˈfi·cien·cy N Brit

labour efficiency
Arbeitsproduktivität f <-> kein pl

la·bour ef·ˈfi·cien·cy N Brit

labour efficiency
Arbeitsproduktivität f <-> kein pl

energy efficiency N

energy efficiency
energetischer Wirkungsgrad

fuel efficiency N

fuel efficiency
Energieeinsparung

cost efficiency N ACCOUNT

cost efficiency
Kosteneffizienz f

efficiency curve N CTRL

efficiency curve
Effizienzkurve f

efficiency line N CTRL

efficiency line
Effizienzlinie f
OpenDict entry

quantum efficiency N

quantum efficiency PHYS
Quantenwirkungsgrad