/ ˌdɪsəˈluːʃn; NAmE / noun [ U ] dissolution (of sth)
1.
the act of officially ending a marriage, a business agreement, or a parliament
2.
the process in which sth gradually disappears :
the dissolution of barriers of class and race
3.
the act of breaking up an organization, etc.
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WORD ORIGIN
late Middle English : from Latin dissolutio(n-) , from the verb dissolvere , from dis- apart + solvere loosen or solve.