- 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 semiautomatic
She also made clear in the petition that her husband owned a 9-millimeter semiautomatic handgun.Guns in the Home: Not as Safe as You'd Think
March 19, 2013
And I keep wondering what would have happened if his unquiet mother had hoarded books instead of semiautomatic weapons.The Promise of Happiness After the Newtown Shooting
January 27, 2013
Recently Senator Dianne Feinstein proposed a ban of semiautomatic and assault weapons along with high-capacity magazines.'Let's Talk About Guns' Live Chat Transcript
January 25, 2013
On that day, he bought an AR-15 semiautomatic rifle to add to his collection of weapons.Aurora Cops Relive the Horror at James Holmes Hearing
January 8, 2013
On that day, he bought an AR-15 semiautomatic rifle to add to his burgeoning collection of weapons.James Holmes Hearing Begins—Inside the Prosecution’s Case
January 7, 2013
A semiautomatic rifle with carefully timed shots searched the area where he had been.Take the Reason Prisoner
John Joseph McGuire
No, sir; it was not the semiautomatic, it was a bolt action rifle, with a clip on it.Warren Commission (1 of 26): Hearings Vol. I (of 15)
The President's Commission on the Assassination of President Kennedy
- 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