1.  decomposition(n = noun.cognition) vector decomposition - the analysis of a vector field;
is a kind of vector algebra

2.  decomposition(n = noun.state) disintegration - in a decomposed state;
is a kind of decay
has particulars: fragmentation

3.  decomposition(n = noun.process) chemical decomposition reaction, decomposition reaction - (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance;
is a kind of chemical reaction, reaction
has particulars: electrolysis
Derived form verb decompose₁

4.  decomposition(n = noun.process) putrefaction, rot, rotting - (biology) the process of decay caused by bacterial or fungal action;
is a kind of decay
Derived form verb decompose₃

5.  decomposition(n = noun.phenomenon) decay - the organic phenomenon of rotting;
is a kind of organic phenomenon
Derived forms verb decompose₃, adjective decompositional₁

N  disjunction, disconnection, disunity, disunion, disassociation, disengagement, discontinuity, abjunction, cataclasm, inconnection, abstraction, abstractedness, isolation, insularity, insulation, oasis, island, separateness, severalty, disjecta membra, dispersion, apportionment, separation, parting, circumcision, detachment, segregation, divorce, sejunction, seposition, diduction, diremption, discerption, elision, caesura, break, fracture, division, subdivision, rupture, compartition, dismemberment, dislocation, luxation, severance, disseverance, scission, rescission, abscission, laceration, dilaceration, disruption, abruption, avulsion, divulsion, section, resection, cleavage, fission, partibility, separability, fissure, breach, rent, split, rift, crack, slit, incision, dissection anatomy, decomposition, cutting instrument, buzzsaw, circular saw, rip saw, separatist, disjoined, discontinuous, multipartite, abstract, disjunctive, secant, isolated, insular, separate, disparate, discrete, apart, asunder, far between, loose, free, unattached, unannexed, unassociated, unconnected, distinct, adrift, straggling, rift, reft, scissile, divisible, discerptible, partible, separable, separately, one by one, severally, apart, adrift, asunder, in twain, in the abstract, abstractedly.

N  decomposition, analysis, dissection, resolution, catalysis, dissolution, corruption, dispersion, disjunction, disintegration, decomposed, catalytic, analytical, resolvent, separative, solvent.

chemical decomposition reaction, decomposition reaction, double decomposition, double decomposition reaction, vector decomposition