examiner

Concise Oxford English Dictionary © 2008 Oxford University Press:
examine/ɪɡˈzamɪn/

▶verb

• 1 inspect or study thoroughly to determine the nature or condition of.

• 2 test the knowledge or proficiency of.

• 3 Law formally question (a defendant or witness) in court.

– derivatives
examinable adjective,
examinee noun,
examiner noun.

– origin ME: from OFr. examiner, from L. examinare ‘weigh, test’, from examen ‘examination’.