test

A hard external covering, as that of certain amoebas, dinoflagellates, and sea urchins.

A procedure for critical evaluation; a means of determining the presence, quality, or truth of something; a trial.

A series of questions, problems, or physical responses designed to determine knowledge, intelligence, or ability.

A basis for evaluation or judgment.

A physical or chemical change by which a substance may be detected or its properties ascertained.

A cupel.

To subject to a test; try.

To determine the presence or properties of (a substance).

To assay (metal) in a cupel.