\De`com*pound"\, v. t. [imp. & p. p. {Decompounded};
p. pr. & vb. n. {Decompounding}.] [Pref. de- (intens. in
sense 1) + compound, v. t.]
1. To compound or mix with that is already compound; to
   compound a second time.
2. To reduce to constituent parts; to decompose.
         It divides and decompounds objects into . . . parts.
                                               --Hazlitt.

\De`com*pound"\, a. [Pref. de- (intens.) + compound,
a.]
1. Compound of what is already compounded; compounded a
   second time.
2. (Bot.) Several times compounded or divided, as a leaf or
   stem; decomposite.

\De`com*pound"\, n.
A decomposite.