Proroguing:
Prorogation in the Westminster system of government is the action of proroguing, or interrupting, a parliament, or the discontinuance of meetings for a given period of time, without a dissolution of parliament. The term is also used for the period of such a discontinuance between two legislative sessions of a legislative body. [Wikipedia]
Or maybe suspension? Noted in “Boris Johnson just published his political memoir. It’s unbelievable.” William Booth, WaPo:
Asked on LBC Radio by host Nick Ferrari: “Which was your greater lie? Lying about proroguing Parliament to the queen, or lying to Parliament about the [rule-breaking pandemic] parties?”
[Former Prime Minister Boris] Johnson eventually answered, “Neither. Since neither of them were a lie, there was no lie.”