semiautomatic

adjective

semi·​au·​to·​mat·​ic ˌse-mē-ˌȯ-tə-ˈma-tik How to pronounce semiautomatic (audio)
ˌse-ˌmī-
-mi-
Synonyms of semiautomaticnext
: not fully automatic: such as
a
: operated partly automatically and partly by hand
b
of a firearm : able to fire repeatedly through an automatic reloading process but requiring release and another pressure of the trigger for each successive shot
a semiautomatic rifle
semiautomatic noun
semiautomatically adverb

Examples of semiautomatic in a Sentence

Recent Examples on the Web
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Following the July 4, 2022, shooting in Highland Park that resulted in seven dead and nearly 50 wounded, Illinois passed the 2023 law banning high-capacity magazines, auto sears and more than 100 types of semiautomatic rifles, handguns and shotguns. Jack O'Connor, Chicago Tribune, 8 Apr. 2026 The semiautomatic handgun deputies say the boy was carrying was reported stolen in July, the report states. David Goodhue april 3, Miami Herald, 3 Apr. 2026 These gadgets, imported from China or Russia or homemade in the US with 3D printers, transform a semiautomatic weapon—which fires a single round with each trigger pull—into a fully automatic one, able to discharge at a rate of 1,200 rounds per minute, limited only by the capacity of the magazine. Simon Akam, Vanity Fair, 2 Apr. 2026 The man had brown eyes, short hair, was clean shaven and had a semiautomatic handgun on his waistband, police said. Jessica Flores, San Francisco Chronicle, 30 Mar. 2026 See All Example Sentences for semiautomatic

Word History

First Known Use

1853, in the meaning defined above

Time Traveler
The first known use of semiautomatic was in 1853

Browse Nearby Words

Cite this Entry

“Semiautomatic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semiautomatic. Accessed 9 Apr. 2026.

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