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semi-automatic

 - 2 dictionary results

sem⋅i⋅au⋅to⋅mat⋅ic

[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
3. a self-loading rifle or other firearm.

Origin:
1890–95; semi- + automatic


sem⋅i⋅au⋅to⋅mat⋅i⋅cal⋅ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

semi-automatic 
in ref. to firearms, 1911, from semi- + automatic (q.v.).
Online Etymology Dictionary, © 2001 Douglas Harper
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