reverberation

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The act of reverberating.
• noun The condition of being reverberated.
• noun Something reverberated.
• noun An echolike force or effect; a repercussion.

from The Century Dictionary.

• noun The act of reverberating, or of driving or turning back; particularly. the reflection of sound, light, or heat: now chiefly of sound.
• noun Resonance; sympathetic vibration.
• noun That which is reverberated; reverberated light, heat, or sound: now chiefly sound.
• noun The circulation of flame in a specially formed furnace, or its deflection toward the hearth of the furnace, as in the reverberatory furnace (which see, under furnace).
• noun In psychology, same as resonance, 5 .

from the GNU version of the Collaborative International Dictionary of English.

• noun The act of reverberating; especially, the act of reflecting light or heat, or reëchoing sound

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A violent oscillation or vibration
• noun An echo, or a series of overlapping echos
• noun The reflection of light or heat; a reflection in, or as though in, a mirror.
• noun plural An evolving series of effects resulting from a particular event; a repercussion

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a remote or indirect consequence of some action
• noun the repetition of a sound resulting from reflection of the sound waves