To put into motion or action; activate: electrical relays that actuate the elevator's movements. (verb-transitive)
To move to action: a speech that actuated dissent. (verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "actuate" in a sentence
"Not only does he have excellent medical credentials but he fits what Obama wants in someone who has the ability to "actuate" change."
"What's worse, the Storm2's implementation requires a surprising amount of effort to actuate, meaning that long messages were a chore to type out -- not only do they wear out your fingers, but it gets old hearing the screen's loud "thunk" each and every time you type a letter, which we find considerably more noticeable than the traditional click of a physical QWERTY keyboard."
"The problem is the way you smoke the first one back – smokers actuate their dose."