decompose in WordNet English dictionary

1. separate (substances) into constituent elements or parts
   decompose  break up  break down 
   
2. lose a stored charge, magnetic flux, or current
   "the particles disintegrated during the nuclear fission process"
   disintegrate  decay  decompose 
   
3. break down
   "The bodies decomposed in the heat"
   decompose  rot  molder  moulder