implosion implosion /ˌɪmˈploʊʒən/

noun

1. The initial occluded phase of a stop consonant  ( implosion )
   the initial occluded phase of a stop consonant
   
2. A sudden inward collapse  ( implosion )
   a sudden inward collapse
    The implosion of a light bulb
   the implosion of a light bulb