#1 decomposition n. [vector decomposition] the analysis of a vector field. wn
#2 decomposition n. [disintegration] in a decomposed state. wn
#3 decomposition n. [decomposition reaction, chemical decomposition reaction] (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance. wn
#4 decomposition n. [rot, rotting, putrefaction] (biology) the process of decay caused by bacterial or fungal action. wn
#5 decomposition n. [decay] the organic phenomenon of rotting. wn
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