Reverberation (noun)

1. The persistence of sound in a space after the original sound has stopped, due to repeated reflections off surfaces.
2. The echoing of sound or a repetition of a sound due to repeated reflections.
3. A lingering or continuing effect of an event, action, or speech, especially a significant one.

Origin:

Derived from the latin 'reverberare' meaning 'to rebound', the word has been in use since the 1650s.

Examples:

1. The reverberation of the sound in the concert hall was outstanding.
2. The reverberation of the speech could be heard in the next room.
3. The reverberation of the gunshot lasted for several minutes.
4. The reverberation of the decision was felt across the entire organization.
5. The reverberation of the announcement caused widespread confusion.