bombardment
1. [ noun ] (physics) the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)
Related terms: radiation
2. [ noun ] (military) the heavy fire of artillery to saturate an area rather than hit a specific target
Synonyms: barrage shelling battery barrage_fire
Examples:

"they laid down a barrage in front of the advancing troops" "the shelling went on for hours without pausing"

Related terms: fire blast
3. [ noun ] (military) an attack by dropping bombs
Synonyms: bombing
Related terms: attack bombing_run area_bombing bombard
Similar spelling:   bombardon
  bombardier