expert witness

American  

noun

1. a person, as a physician, who provides testimony at a legal proceeding in the form of professional opinions.

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Example Sentences

Johnson has been an advocate of Kory’s for years, calling the doctor as an expert witness in two 2020 Senate hearings.

From Salon

As an expert witness, my role has been to bring the experiences of this continent’s first peoples into legal proceedings where their rights as tribal citizens and as Americans were being challenged.

From Salon

A federal judge dismissed the case, saying research from the parents' expert witnesses was not conclusive.

From BBC

Baccarelli has served as an expert witness in litigation against Tylenol’s maker.

From The Wall Street Journal

An expert witness for the bank testified the barrels will be “very, very, very difficult to sell,” Everett said.

From The Wall Street Journal