1. collapsed inward violently due to external pressure being greater than internal pressure
2. failed or collapsed suddenly and completely from internal problems
Usage: figurative

Examples

• The submarine imploded under the enormous water pressure.
• The old building imploded in a controlled demolition.
• The glass tube imploded when the vacuum was created.
• The company imploded after the financial scandal broke.
• Their marriage imploded due to constant arguments.
• The political party imploded following the corruption charges.
• The star imploded and formed a black hole.