noun

die Effizienz, -en

efficiency

Definition & meaning

Effizienz refers to the ratio between the achieved result and the resources used to attain it. In a general sense, it describes the ability to accomplish a task or produce an outcome with the least amount of waste, expense, or unnecessary effort.

There are two primary ways to understand this term:

Economic or Technical Efficiency: This describes reaching a specific goal with the minimum possible resources (the "minimal principle") or achieving the greatest possible result with a set amount of resources (the "maximal principle").
General Productivity: It is often used to describe how well a system, person, or machine performs in relation to the time and energy invested.

It is important to distinguish Effizienz from Effektivität. While Effektivität means "doing the right things" (reaching the goal regardless of cost), Effizienz means "doing things right" (reaching the goal with optimal resource usage).

Grammar & Word origin

The word Effizienz is a feminine noun (die Effizienz). It is primarily used in the singular form; although a plural form (die Effizienzen) technically exists, it is extremely rare in common usage.

The word originates from the Latin term "efficientia," which is derived from "efficere," meaning "to work out," "to accomplish," or "to bring about." The root consists of "ex-" (out of) and "facere" (to do/make). In German, it follows the pattern of forming abstract nouns from Latin-based adjectives using the suffix "-enz."