reverberation in WordNet English dictionary

1. the repetition of a sound resulting from reflection of the sound waves
   "she could hear echoes of her own footsteps"
   echo  reverberation  sound reflection  replication 
   
2. a remote or indirect consequence of some action
   "his declaration had unforeseen repercussions"; "reverberations of the market crash were felt years later"
   repercussion  reverberation