reptilarium UK /ˌɹɛp.tɪˈlɛəɹi.əm/US /ˌɹɛp.tɪˈlɛɹi.əm/ noun1 •A place artificially arranged for keeping or raising reptiles.Besides displays on the geology and history of the region, the centre provides an introduction to local wildlife, with reptilariums holding live rattlesnakes. — 2011 formsreptilaria · reptilariums