Bombardment

n.

1.

An attack upon a fortress or fortified town, with shells, hot shot, rockets, etc.; the act of throwing bombs and shot into a town or fortified place.

Noun	1.	bombardment - the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)
	2.	bombardment - the heavy fire of artillery to saturate an area rather than hit a specific target; "they laid down a barrage in front of the advancing troops"; "the shelling went on for hours without pausing" Synonyms: barrage fire, shelling, barrage, battery
	3.	bombardment - an attack by dropping bombs Synonyms: bombing

air raid, alpha decay, atom-chipping, atom-smashing, atomic disintegration, atomic reaction, atomization, beta decay, blitz, blitzkrieg, breeding, broadside, bullet, burst, cannonade, chain reaction, cleavage, disintegration series, dissociation, drumfire, exchange reaction, fission, fission reaction, fusillade, gamma decay, hail, ionization, lightning attack, lightning war, neutron reaction, nonreversible reaction, nuclear fission, nucleization, photodisintegration, proton gun, proton reaction, reversible reaction, salvo, shower, splitting the atom, stimulation, strafe, strafing, target, thermonuclear reaction, volley