'consecratory' originates from Latin, specifically the verb 'consecrare' (past participle 'consecratus'), where 'con-' meant 'together' or 'completely' and 'sacrare' meant 'to make sacred'.

'consecratory' developed from Latin 'consecrare' through Late Latin and Old French/Medieval Latin forms into Middle English 'consecrate' and then the adjective was formed by adding the suffix '-ory' to create the modern English 'consecratory'.

Initially it meant 'to make sacred' (the action of consecration), but over time it came to be used as an adjective meaning 'pertaining to or serving for consecration' (i.e., 'used in or characteristic of a consecration').