Implosion: A catastrophic implosion

A catastrophic implosion, such as what is believed to have destroyed the Titan submersible, would have happened with incredible force and speed given the crushing water pressure on the ocean floor. Implosion is the collapse of an object into itself from a pressure differential or gravitational force. Learn about the examples of implosion in nuclear weapons, fluid dynamics, astrophysics, and more. The meaning of IMPLOSION is the action of imploding. How to use implosion in a sentence. Implosion involves a collapsing inward movement of material, often caused by external forces or pressure, while explosion is the rapid outward release of energy, resulting in the scattering of materials from a central point.