Legislation is law which has been promulgated by a legislature or other governing body, or the process of making it...
. Veto: An emphatic prohibition of any sort.
In practice, the veto can be absolute, as for instance in the United Nations Security Council
United Nations Security Council veto power
The United Nations Security Council "power of veto" refers to the veto power wielded solely by the five permanent members of the United Nations Security Council , enabling them to prevent the adoption of any "substantive" draft Council resolution, regardless of the level of international support...
, whose permanent members (China
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, the United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...
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Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
, and the United States of America) can block any resolution. Or, it can be limited, as in the legislative process of the United States, where a two-thirds vote in both the House
United States House of Representatives
The United States House of Representatives is one of the two Houses of the United States Congress, the bicameral legislature which also includes the Senate.The composition and powers of the House are established in Article One of the Constitution...
United States Senate
The United States Senate is the upper house of the bicameral legislature of the United States, and together with the United States House of Representatives comprises the United States Congress. The composition and powers of the Senate are established in Article One of the U.S. Constitution. Each...
may override a Presidential veto of legislation.
A veto only gives power to stop changes, not to adopt them.