semiautomatic

adjective

semi·​au·​to·​mat·​ic ˌse-mē-ˌȯ-tə-ˈma-tik 

ˌse-ˌmī-, 

-mi-

: 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

ˌse-mē-ˌȯ-tə-ˈma-ti-k(ə-)lē 

ˌse-ˌmī-, 

-mi-

adverb

Examples of semiautomatic in a Sentence

Recent Examples on the Web

Following his arrest, authorities found a semiautomatic rifle, five rifle magazines, about 190 rounds of ammunition, pepper spray, an entrenchment tool, and about 30 knives, according to the affidavit. — Thao Nguyen, USA Today, 16 Sep. 2026

Searches of Kramer, his hotel room and his home turned up a semiautomatic rifle, five rifle magazines — two loaded and three capable of holding 30 rounds each — and 190 rounds of rifle ammunition, according to the complaint. — Stephen Sorace, FOXNews.com, 15 Sep. 2026

On May 4, Annunciation families watched from the gallery as the Minnesota Senate passed, by one vote, the most sweeping gun control bill in Minnesota history, including a ban on semiautomatic weapons and large-capacity magazines. — Esme Murphy, CBS News, 27 Aug. 2026

Carter also faces two counts of committing assault with a semiautomatic gun upon a peace officer. — Rosalio Ahumada, Sacbee.com, 26 Aug. 2026

Word History

First Known Use

1853, in the meaning defined above

Rhymes for semiautomatic

• antidemocratic
• bacteriostatic
• heterochromatic
• idiosyncratic
• paleoclimatic
• achromatic
• acrobatic
• adriatic
• aliphatic
• antistatic
• aromatic
• astigmatic