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Origin and history of efficiency

efficiency(n.)

1590s, "power to accomplish something," from Latin efficientia "efficient power; efficiency; influence" (from efficientem; see efficient) + -cy. In mechanics, "ratio of useful work done to energy expended," from 1858. Attested by 1951 as short for efficiency apartment (itself from 1917).

also from 1590s

Entries linking to efficiency

efficient(adj.)

late 14c., "making, producing immediate effect, active, effective," from Old French efficient and directly from Latin efficientem (nominative efficiens) "effective, efficient, producing, active," present participle of efficere "work out, accomplish," from assimilated form of ex "out" (see ex-) + facere "to do" (from PIE root *dhe- "to set, put"). Meaning "productive, skilled" is from 1787. Related: Efficiently.

inefficiency(n.)

1749; see in- (1) "not, opposite of" + efficiency (n.).

-cy

abstract noun suffix of quality or rank, ultimately representing in English Latin -cia, -tia (see -ia) but a living word-forming element in modern English. The native correspondents are -ship, -hood.

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    escrow
    1590s, in law, "a writing fully executed by the parties, but put into the custody of a third person to hold until the fulfilment of some condition, when it is to be delivered to the grantee;" from Anglo-French escrowe, from Old French escroe "scrap, small piece, rag, tatter, sing
    boast
    mid-13c., "arrogance, presumption, pride, vanity;" c. 1300, "a brag, boastful speech," from Anglo-French bost "ostentation," probably from a Scandinavian source (compare Norwegian baus "proud, bold, daring"), from Proto-Germanic *bausia "to blow up, puff up, swell" (source also o
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