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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
efficiency of a method
efficiency of a method
Effizienz f <-, -en> form

2. efficiency no pl (frugality):

efficiency
efficiency
Effizienz f <-, -en> form

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

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

4. efficiency Am (apartment):

efficiency

efficiency N CTRL

efficiency
efficiency
efficiency
efficiency

efficiency N MKTG

efficiency

combustion efficiency [kəmˈbʌstʃnɪˌfɪʃnsi], efficiency N

cost ef·ˈfi·cien·cy N

cost efficiency

ef·ˈfi·cien·cy apart·ment N Am

ef·ˈfi·cien·cy plan·ning N no pl

ef·ˈfi·cien·cy ra·tio N

ˈheat ef·fi·cien·cy N SCIENCE

heat efficiency

la·bor ef·ˈfi·cien·cy N no pl Am

labor efficiency → labour efficiency

See also

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

fuel efficiency N

fuel efficiency

cost efficiency N ACCOUNT

cost efficiency

efficiency curve N CTRL

efficiency curve

efficiency line N CTRL

efficiency line
OpenDict entry

quantum efficiency N

quantum efficiency PHYS
dev
dev
dev
dev