imploded

/IH0 M P L OW1 D IH0 D/
verb
  1. 1

    To collapse or burst inward violently.

  2. 2

    To compress (data) with a particular algorithm.

adjective
  1. 1

    That has collapsed inwards

Source: https://en.wiktionary.org/wiki/implode, https://en.wiktionary.org/wiki/imploded