From paroko (“parish priest, rector”) + -io. IPA(key): /<span class="searchmatch">paˈroki̯o</span>/ <span class="searchmatch">parokio</span> (plural parokii) parish (members of the parish)...
(“bishopric, diocese, episcopate”) paroko (“parish priest, rector”) + -io → <span class="searchmatch">parokio</span> (“parish”) rejo (“sovereign, ruler, king, queen, monarch”) + -io → rejio...