What is the meaning of dismantling?

noun

• The act of taking something apart (as a piece of machinery. )
  • usage: "Russia and the United States discussed the dismantling of their nuclear weapons"
  • synonyms: dismantlement, disassembly

verb

• Tear down so as to make flat with the ground.
  • usage: "The building was levelled"
  • synonyms: level, raze, rase, dismantle, tear down, take down, pull down
• Take apart into its constituent pieces.
  • synonyms: disassemble, dismantle, take apart, break up, break apart
• Take off or remove.
  • usage: "strip a wall of its wallpaper"
  • synonyms: strip, dismantle