<p><strong>Noun</strong></p><ul><li>the means by which the presence, quality, or genuineness of anything is determined; a means of trial</li><li>the trial of the quality of something: to put to the test</li><li>a particular process or method for trying or assessing</li><li>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</li><li>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</li><li>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</li><li>an indication or evidence of the presence of a constituent, or of the nature of a substance, obtained by such means</li><li>an oath or other confirmation of one's loyalty, religious beliefs, etc.</li><li>British: a cupel for refining or assaying metals</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>to subject to a test of any kind; try</li><li>to subject to a chemical test</li><li>to assay or refine in a cupel</li></ul><p><strong>Verb (used without object)</strong></p><ul><li>to undergo a test or trial; try out</li><li>to perform on a test: People test better in a relaxed environment</li><li>to conduct a test: to test for diabetes</li></ul><p><strong>Synonyms</strong></p><ul><li>assay</li><li>proof</li><li>examine</li><li>prove</li></ul>