- partly automatic.
- (of a firearm) automatically ejecting the cartridge case of a fired shot and loading the next cartridge from the magazine but requiring a squeeze of the trigger to fire each individual shot.
- a self-loading rifle or other firearm.
Origin of semiautomatic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for semi-automatic
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This has not been true since 2004, when the ban on some semi-automatic firearms signed by Bill Clinton in 1994 expired.Obama vs. Romney Presidential Debate Round Two: Who Lied?
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When the young man entered the house, Thomas allegedly pulled a semi-automatic handgun on him.Teen Hostage Horror
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Then try to play the two hands together in a sort of semi-automatic way.Piano Playing</p>
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The vast McCormick City has its human side, too, in spite of all its noise and semi-automatic machinery.Cyrus Hall McCormick</p>
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Glass is blown by three methods: hand-blowing, semi-automatic blowing, and automatic blowing.How To Write Special Feature Articles
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- partly automatic
- (of a firearm) self-loading but firing only one shot at each pull of the triggerCompare automatic (def. 5)
- a semiautomatic firearm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for semi-automatic
Online Etymology Dictionary, © 2010 Douglas Harper