1.
If an action or procedure is ~, people have to do it, because it is a rule or a law. (FORMAL)
...the ~ retirement age of 65...
Attendance is ~.
= compulsory
ADJ
2.
If a crime carries a ~ punishment, that punishment is fixed by law for all cases, in contrast to crimes for which the judge or magistrate has to decide the punishment for each particular case. (FORMAL)
...the ~ life sentence for murder.
? discretionary
ADJ