the means by which the presence, quality, or genuineness of anything is determined; a means of trial.

the trial of the quality of something

to put to the test.

a particular process or method for trying or assessing.

a set of questions, problems, or the like, used as a means of evaluating the abilities, aptitudes, skills, or performance of an individual or group; examination.

Psychology . a set of standardized questions, problems, or tasks designed to elicit responses for use in measuring the traits, capacities, or achievements of an individual.

Chemistry .

the process of identifying or detecting the presence of a constituent of a substance, or of determining the nature of a substance, commonly by the addition of a reagent.

the reagent used.

an indication or evidence of the presence of a constituent, or of the nature of a substance, obtained by such means.

an oath or other confirmation of one's loyalty, religious beliefs, etc.

British . a cupel for refining or assaying metals.

to subject to a test of any kind; try.

Chemistry . to subject to a chemical test.

Metallurgy . to assay or refine in a cupel.

to undergo a test or trial; try out.

to perform on a test

People test better in a relaxed environment.

to conduct a test

to test for diabetes.