Implosion is a term used to describe an inward collapse or explosion. It can refer to several different phenomena, including: 1) A sudden and rapid decline in value or price; 2) An event that causes a group or organization to fall apart or disintegrate; 3) The act of drawing inwards or collapsing upon oneself, as seen in certain types of explosives. Implosion is the opposite of explosion, which involves an outward burst or expansion.