Dissolution of parliament
The dissolution of a legislative assembly is the simultaneous termination of service of all of its members, in anticipation that a successive legislative assembly will reconvene later with possibly different members. In a democracy, the new assembly is chosen by a general election. Dissolution is distinct on the one hand from abolition of the assembly, and on the other hand from its adjournment or prorogation, or the ending of a legislative session, any of which begins a period of inactivity after which it is anticipated that the same members will reassemble. For example, the “second session of the fifth parliament” could be followed by the “third session of the fifth parliament” after the close of a session, but would be followed by the “first session of the sixth parliament” after a dissolution.
Read more on Wikipedia