(~s)
1.
An ~ is a person who is employed to calculate the value of something, or the amount of money that should be paid, for example in tax. (BUSINESS)
= appraiser
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2.
An ~ is a person who is an expert in a subject, especially someone asked to advise a court of law on that subject.
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3.
An ~ is a person who judges the performance of someone else, for example in an exam, at an interview or at a sporting event.
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