To "snipe" is a slang term used that describes the action of usually one-shot killing another unit via ranged units or spells (with the exception of scourge and the infested terran, which are melee).
Most seen used with stacked group of mutalisks, which are used to pick apart an opponent's base or army one by one, by quickly darting in to release all attacks at once and just as quickly dashing out away from potential defenses.
Other units/abilities that snipe
- Infested Terran
- Spawn Broodling
- Siege Tank
- Stacked Mutalisk or Wraith
- Reaver / Scarab
Sniping is most successful using any pile of ranged and/or high damage units that can potentially kill a single important unit in split seconds.
Most commonly sniped
- Science Vessel
- Missile Turret
- Marines, Firebats, and Medics
- High Templar
Targets for sniping are usually low HP units or high value units are targets for sniping.)