One who consecrates; a person, especially a religious official, who dedicates something to sacred purposes.
From 'consecrate' + the agentive suffix '-er' (one who does something). Latin 'consecrare' + English agent noun formation.
While 'consecrator' is the standard form, 'consecrater' shows how English tolerates both '-er' and '-or' endings for agents—medieval priests were both 'consecraters' and 'consecrators,' but only one spelling survived.
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