Expert witness
An expert witness is a
witness, who by virtue of
education,
training,
skill, or
experience, is believed to have
knowledge in a particular subject beyond that of the average person, sufficient that others may officially (and legally) rely upon the witness's specialized (scientific, technical or other) opinion about an
evidence or
fact issue within the scope of their expertise, referred to as the expert opinion, as an assistance to the
fact-finder. Expert witnesses may also deliver expert evidence about facts from the domain of their expertise.
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Expert judiciaire
expert witness
expert witness
n.
professional person who gives relevant testimony from the field of his expertise (Law)
expert witness
専門家の証人, (法) 自らの専門知識分野に関連する証言をする専門家