N-COUNT [oft with poss]特权;独有的权力;专利 If something is the prerogative of a particular person or group, it is a privilege or a power that only they have. 特权;独有的权力;专利 [formal]
Constitutional changes are exclusively the prerogative of the parliament.
修改宪法是议会独有的权力。
It is your prerogative to stop seeing that particular therapist and find another one.