(mainly US & Canadian) a provision of a law that it will automatically be terminated after a fixed period unless it is extended by law
noun 1. a statute that includes provision for automatic termination of a government program, agency, etc., at the end of a specified time period unless it is reauthorized by the legislature. sunny side up
noun 1. Oregon (used as a nickname).
noun 1. (mainly US & Canadian) the act or an instance of applying a sunset clause
noun 1. something used as a protection from the rays of the sun, as an awning or a parasol. noun 1. a device, esp a parasol or awning, serving to shade from the sun