/ ˌɔːdɪˈneɪʃn; NAmE ˌɔːrdnˈeɪʃn/ noun
[ U , C ] the act or ceremony of making sb a priest, minister or rabbi
—see also ordain
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WORD ORIGIN
late Middle English (in the general sense arrangement in order ): from Latin ordinatio(n-) , from Latin ordinare put in order, from ordo , ordin- row, series, rank.