ordain UK /ɔːˈdeɪn/US /ɔɹˈdeɪn/ verb4 •To decree. •To admit into the ministry, for example as a priest, bishop, minister or Buddhist monk, or to authorize as a rabbi. •To prearrange unalterably.What if the Foot, ordain'd the dust to tread, / Or Hand, to toil, aspir'd to be the Head? / What if the Head, the Eye, or Ear repin'd / To serve mere Engines to the ruling Mind? — 1733 •To predestine. formsordained · ordaining · ordaineth · ordains · ordainest