Adjective
semi-auto (not comparable)
(informal) Alternative form of semi-automatic
They say I walk around like I've got an 'S' on my chest. No, that's a semi-auto and a vest on my chest. 50 Cent
In an era of semi-auto, magazine-fed firearms, this can be a major factor as it will delay you due to reload time. Source: Internet
The Beretta has two triggers, the front for semi-auto and rear for full-auto. Source: Internet
The M16A2 fires the improved 5.56×45mm NATO (M855/SS109) cartridge and has a new adjustable rear sight, case deflector, heavy barrel, improved handguard, pistol grip and buttstock, as well as a semi-auto and three-round burst only fire selector. Source: Internet
These lengths are for pump or semi-auto shotguns; break open guns have shorter overall lengths for the same barrel length, and so will use longer barrels. Source: Internet
This is also referred to as Aperture Priority Auto Exposure, A mode, AV mode (aperture-value mode), or semi-auto mode. citation (original link no longer works, but page was saved by archive. Source: Internet