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2017 Word of the Year

lost motion

noun, Machinery.
1.
motion of a machine or mechanism, especially a reciprocating one, during which no useful work is performed.
2.
motion between parts in an assembly due to manufacturing tolerances, adjustments, slip, or wear.
Origin of lost motion
1875-1880
First recorded in 1875-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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4
5
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