A vote that blocks a decision. In the United Nations, for example, each of the five permanent members of the Security Council has the power of veto.
The power of a president or governor to reject a bill proposed by a legislature by refusing to sign it into law. The president or governor actually writes the word veto (Latin for “I forbid”) on the bill and sends it back to the legislature with a statement of his or her objections. The legislature may choose to comply by withdrawing or revising the bill, or it can override the veto and pass the law, by a two-thirds vote in each house.
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