The act of preventing or hindering; obstruction of action, access, or approach; thwarting.
precaution; forethought.
Any measure intended to limit health-related risks (such as information campaigns, vaccination, early diagnosis etc.).
An authoritative prohibition or negative; a forbidding; an interdiction.
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.
To use a veto against.