efficiency

efficiency is defined in Webster's Unabridged Dictionary (1913) with 1 sense. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(Mech.) The ratio of useful work to energy expended. Rankine. Efficiency of a heat engine, the ratio of the work done an engine, to the work due to the heat supplied to it.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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