1.
Dissolution is the act of breaking up officially an organization or institution, or of formally ending a parliament. (FORMAL)
Politicians say it could lead to a ~ of parliament.
N-UNCOUNT: also a N, oft N of n
2.
Dissolution is the act of officially ending a formal agreement, for example a marriage or a business arrangement. (FORMAL)
...the statutory requirement for granting ~ of a marriage.
= termination
N-UNCOUNT: also a N, oft N of n