An act of authorizing.
(A document giving) formal sanction, permission or warrant.
Permission.
Permission, possibly limited, to spend funds for a specific budgetary purpose.
An invocation of that right.
A technique or mechanism for discarding what would otherwise constitute a false positive in a scientific experiment
A political right to disapprove of (and thereby stop) the process of a decision, a law etc.
An authoritative prohibition or negative; a forbidding; an interdiction.
To use a veto against.