an order prohibiting some proposed or intended act; prohibition, esp. by a person in authority
the power to prevent action by such prohibition
the constitutional right or power of a ruler or legislature to reject bills passed by another branch of the government
☆ in the U.S.,
the power of the President to refuse to sign a bill passed by Congress, preventing it from becoming law unless it is passed again (with a two-thirds majority) by both houses
a similar power held by the governors of states
the exercise of this power
☆ a document or message giving the reasons of the executive for rejecting a bill
the power of any of the five permanent members of the Security Council of the United Nations to cast a negative vote, affirmative votes of all five being required to take action on other than procedural matters