An archaic legal term for a person who has been called upon to advise; an advisor in a formal or legal context.
From Latin 'advitans,' present participle of a hypothetical verb based on 'ad-' (toward) and 'vita' (life) or related to 'viso' (to see/advise). This is an extremely rare historical legal term.
This word is so obscure that it appears almost nowhere in modern English except in specialized historical legal texts—it's a perfect example of how older legal terminology gets buried under better words.
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