DECOMPOUND', verb transitive 1. To compound a second time; to compound or mix with that which is already compound; to form by a second composition. 2. To decompose. DECOMPOUND', adjective 1. Composed of things or words already compounded; compounded a second time. 2. A decompound leaf, in botany, is when the primary petiole is so divided that each part forms a compound leaf. A decompound flower is formed of compound flowers, or containing, within a common calyx, smaller calyxes, common to several flowers.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI