semiautomatic

[sem-ee-aw-tuh-mat-ik, sem-ahy-]
adjective
  1. partly automatic.
  2. (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.
noun
  1. a self-loading rifle or other firearm.

Origin of semiautomatic

First recorded in 1890–95; semi- + automatic
Related formssem·i·au·to·mat·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for semiautomatic

semiautomatic

adjective
  1. partly automatic
  2. (of a firearm) self-loading but firing only one shot at each pull of the triggerCompare automatic (def. 5)
noun
  1. a semiautomatic firearm
Derived Formssemiautomatically, adverb
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