n. Something that actuates something else, especially a mechanism that causes a device to be switched on or off
n. The mechanism that moves the head assembly on a disk drive
n. A relay that controls the flow of electricity
the GNU version of the Collaborative International Dictionary of English
n. One who actuates, or puts into action.
The Century Dictionary and Cyclopedia
n. One who or that which actuates or puts in action.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a mechanism that puts something into automatic action
Word Usage
"BGW: how about the word actuator instead of trigger with respect to Mr. Redneckerson...it carries more of the engineer chic that is so popular with the kids these days."