<span class="searchmatch">hyperboreum</span> inflection of hyperboreus: nominative/accusative/vocative neuter singular accusative masculine singular...
IPA(key): [i.perˈbɔː.re.us] hyperboreus (feminine hyperborea, neuter <span class="searchmatch">hyperboreum</span>); first/second-declension adjective hyperborean Synonym: hyperboreanus...