King-in-Parliament
In the Westminster system used in many Commonwealth realms, the King-in-Parliament (Queen-in-Parliament during the reign of a queen) is a constitutional law concept that refers to the components of parliament – the sovereign (or vice-regal representative) and the legislative houses – acting together to enact legislation. Parliamentary sovereignty is a concept in the constitutional law of Westminster systems that holds that parliament has absolute sovereignty and is supreme over all other government institutions.