Answer:
A veto (Latin for "I forbid") is the power (used by an officer of the state, for example) to unilaterally stop an official action, especially the enactment of legislation. A veto can be absolute, as for instance in the United Nations Security Council, whose permanent members (China, France, Russia, the United Kingdom, and the United States) 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 and Senate will override a presidential veto of legislation.[1] A veto may give power only to stop changes (thus allowing its holder to protect the status quo), like the US legislative veto, or to also adopt them (an "amendatory veto"), like the legislative veto of the Indian President, which allows him to propose amendments to bills returned to Parliament for reconsideration.
Explanation:
The concept of a veto body originated with the Roman offices of consul and tribune of the plebs. There were two consuls every year; either consul could block military or civil action by the other. The tribunes had the power to unilaterally block any action by a Roman magistrate or the decrees passed by the Roman Senate.
