im ‧ plode /ɪmˈpləʊd $ -ˈploʊd/ BrE AmE verb [intransitive]
[ Date: 1800-1900 ; Origin: im- + -plode (as in explode ) ]
1 . technical to explode inwards OPP explode :
The windows on both sides of the room had imploded.
2 . written if an organization or system implodes, it fails suddenly, often because of faults that it has SYN collapse :
Most nations learned their lesson during the 1930s, when trade imploded and incomes plunged.
—implosion /ɪmˈpləʊʒ ə n $ -ˈploʊ-/ noun [uncountable and countable]