Semi-automatic - ''Noun'': "Partially automatic and partially manual in operation (i.e., operated both automatically and manually, by hand); not ''fully-automatic''."
This may refer to:
* A semi-automatic firearm
, a firearm which automatically reloads, but will only fire one round per trigger pull
** Semi-automatic rifle
** Semi-automatic pistol
** Semi-automatic shotgun
* Semiautomatic switching system
, a term used in telecommunication
* Semi-automatic transmission
: a manual transmission with an automated clutch (i.e., no physical clutch pedal), but the driver is still required to shift gears manually, by hand. Also called: ''clutchless manual transmission'' or ''automated manual transmission''.
* "Semi-Automatic", a song from Twenty One Pilots' 2013 album ''Vessel