Decompound \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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Decompound \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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

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

Source: Webster's Revised Unabridged Dictionary (1913)