decomposition

decomposition is a Noun

Definition:

[1] The act or process of resolving the constituent parts of a compound body or substance into its elementary parts; separation into constituent part; analysis; the decay or dissolution consequent on the removal or alteration of some of the ingredients of a compound; disintegration; as, the decomposition of wood, rocks, etc.

[2] The state of being reduced into original elements.

[3] Repeated composition; a combination of compounds. [Obs.] Decomposition of forces. Same as Resolution of forces, under Resolution. -- Decomposition of light, the division of light into the prismatic colors.