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1. The event or time of the disappearance of the upper circumferential edge of the sun as it sets below the horizon.
2. The sky as the sun sets: a rosy sunset.
3. A decline or final phase: the sunset of an empire.
4. Law The automatic expiration of a statutory provision on a previously established date, in the absence of reauthorization: The law's sunset was July 1.
Law Providing for an automatic expiration.
v. sun·set·ted, sun·set·ting, sun·sets Law
To expire on a previously established date, as a statutory provision.
To provide for the expiration of (a program or agency) by means of a sunset provision.
[Adj. and v., on the model of sunshine (as in sunshine law).]
1. (Law) chiefly US and Canadian the act or an instance of applying a sunset clause
2. (Government, Politics & Diplomacy) chiefly US and Canadian the act or an instance of applying a sunset clause