examinatio

Latin examen was the tongue or pointer of a balance scale — the central pin that indicated whether the weights on each side were equal. Examinare meant to weigh, to test by the balance, to determine whether something was genuine or accurate by subjecting it to the measuring instrument. Examinatio was the act of such weighing — the testing, the scrutiny, the determination of truth or adequacy.

Roman courts used examinatio for the judicial examination of witnesses and evidence — the careful questioning that weighed testimony. The word carried the legal sense of scrutiny under oath, the formal process of determining truth. When courts examined a witness, they were subjecting their testimony to the scales of justice.

Medieval universities adopted examination for the formal testing of students' knowledge. The examination determined whether a student had learned enough to be granted a degree — a weighing of their knowledge against the standard required. Cambridge and Oxford developed complex examination traditions; the Cambridge Mathematical Tripos, begun in the 18th century, became legendary for its difficulty and the social status it conferred on top performers.

Today examination — typically shortened to exam — is one of the defining rituals of education. The assessment of whether someone knows enough to advance, qualify, or be certified remains the core function. The Latin scales are not entirely gone: an exam still asks whether what you know balances against what is required.