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Definition of "semiautomatic" [semiautomatic]

  • Partially automatic. (adjective)
  • Ejecting a shell and loading the next round of ammunition automatically, but requiring a squeeze of the trigger for each shot. Used of a firearm. (adjective)
  • A semiautomatic firearm. Also called self-loader. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "semiautomatic" in a sentence
  • "Do they make a .458 Lott in semiautomatic with a 30 round clip?"
  • "Bender declined to say when or how the boy got the gun, which was identified as a semiautomatic 9 mm Kel-Tec."
  • "A semiautomatic is defined as a weapon that is not fully automatic, and thus not a machine gun."