Learn how to say Penitentiary correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word penitentiary:
noun (plural penitentiaries)
1North American a prison for people convicted of serious crimes.
2(in the Roman Catholic Church) a priest appointed to administer penance.
an office in the papal court forming a tribunal for deciding on questions relating to penance, dispensations, and absolution.
late Middle English (as a term in ecclesiastical law): from medieval Latin paenitentiarius, from Latin paenitentia ‘repentance’. The North American usage dates from the early 19th century