set (something) in motion

set (something) in motion

To act to cause something to begin. The senator from New Hampshire set the legislation in motion. We've been planning the details for months, but it's ultimately up to the boss to set the project in motion.
See also: motion, set
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

set something in motion

to start something moving. The mayor set the project in motion by digging the first shovelful of soil. I cannot set the procedure in motion until I receive a purchase order.
See also: motion, set
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

set in motion

Start something moving, give impetus to something, as in A press conference set the new project in motion. It is also put as set the wheels in motion, as in Let's set the wheels in motion for the new library wing. This idiom dates from about 1800. It was preceded by put in motion, which dates from the mid-1600s.
See also: motion, set
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

set in motion

To give impetus to: The indictment set the judicial process in motion.
See also: motion, set
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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