Dictionary.com

lost motion

Save This Word!

noun Machinery.
motion of a machine or mechanism, especially a reciprocating one, during which no useful work is performed.
motion between parts in an assembly due to manufacturing tolerances, adjustments, slip, or wear.
QUIZ
QUIZ YOURSELF ON "WAS" VS. "WERE"!
Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

Origin of lost motion

First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use lost motion in a sentence

FEEDBACK