Penology rhymes with:
biotechnology, chronology, criminology, dendrochronology, endocrinology, ethnology, hymnology, immunology, infotechnology, intertechnology, limnology, polytechnology, technology, terminology, transtechnology
Penology sounds like:
painless, pamela's, panel's, panelize, panels, panels', pannill's, penalize, penalizes, penaloza, penelas, penn-hills, penniless, phenolic, phonology, pinellas, pinholes, pomology