cryptozoology UK /ˌkɹɪp.təʊ.zəʊˈɒ.lə.d͡ʒi/US /ˌkɹɪp.toʊ.zoʊˈɑ.lə.d͡ʒi/ noun1 •Study of cryptids, animals whose existence has not been proven.The Loch Ness Monster is one of the mysteries of cryptozoology.