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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Aysha Bagchi The Supreme Court agreed Tuesday to review lawsuits challenging bans on AR-15s and other semiautomatic rifles in both Connecticut and Chicago's Cook County, Illinois. Maureen Groppe, USA Today, 1 July 2026 The federal government argues in its complaint that California can’t ban legal semiautomatic handguns simply because they could be illegally altered, adding that state and federal law already prohibit such pistol converters. Gavin J. Quinton, Los Angeles Times, 1 July 2026 The justices will consider whether bans on semiautomatic rifles violate the Constitution. ABC News, 1 July 2026 Justices agreed to decide in the next term whether states and local governments can ban semiautomatic rifles. Elizabeth Robinson, NBC news, 1 July 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

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Cite this Entry

“Semiautomatic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semiautomatic. Accessed 5 Jul. 2026.

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