output (n.)

"quantity of material put out or produced in a given time," 1839, from out- + put (v.). Until c. 1880, "a technical term in the iron and coal trade" [OED]; by 1884 as "energy produced by a device or system." The verb is attested from mid-14c., originally "to expel, exclude" (a sense now obsolete); meaning "to produce" is from 1858.

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