efficient

/əˈfɪʃənt/ · noun

Meaning

A cause; something that causes an effect
Making good, thorough, or careful use of resources; not consuming extra. Especially, making good use of time or energy
Expressing the proportion of consumed energy that was successfully used in a process; the ratio of useful output to total input
Causing effects, producing results; bringing into being; initiating change (rare except in philosophical and legal expression efficient cause = causative factor or agent)
(old use) effective

No prose etymology has been added yet.

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