penologist
noun/piːˈnɒlədʒɪst/, /pɪˈnɒlədʒɪst/
/piːˈnɑːlədʒɪst/, /pɪˈnɑːlədʒɪst/
- a person who studies the punishment of criminals and the operation of prisons (= penology)
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penologist
Definition of penologist noun from the Oxford Advanced Learner's Dictionary