The act or process of admitting, allowing, or applying something for a particular purpose (archaic term).
From Latin adhibitio, derived from adhibire (ad- 'to' + habere 'to have'). The -tion ending creates a noun form describing the action itself.
In medieval monastery records, scribes would write about the 'adhibition' of new books to the library—a formal way of saying they were admitting or bringing them into the collection!
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