Decompose \De`com*pose"\, v. t. [imp. & p. p. {Decomposed}; p.
pr. & vb. n. {Decomposing}.] [Cf. F. d['e]composer. Cf.
{Discompose}.]
To separate the constituent parts of; to resolve into
original elements; to set free from previously existing forms
of chemical combination; to bring to dissolution; to rot or
decay.
[1913 Webster]
20 Moby Thesaurus words for "decomposing": ablative, biodegradable, corrosive, decomposable, degradable, dilapidated, disintegrable, disintegrated, disintegrating, disintegrative, disjunctive, disruptive, erosive, moldering, ravaged, resolvent, ruinous, separative, solvent, worn