(test) v.t.
1. To subject to a test or trial; try.
2. Chem. a To refine, as gold or silver, by means of lead, as in the process of cupellation. b To examine by means of some reagent, as in testing for sulfuric acid.
—v.i.
3. Chem. To undergo testing; also, to show specified qualities or properties under testing: The alcohol tested 75 percent. See synonyms under EXAMINE. [<noun]
—noun
1. Subjection to conditions that disclose the true character of a person or thing in relation to some particular quality.
2. An examination made for the purpose of proving or disproving some matter in doubt, as mental condition.
3. A criterion or standard of judgment.
4. An oath or other confirmatory evidence of principles or belief.
5. Chem. a A reaction by means of which the identity of a compound or one of its constituents may be determined. b Its agent or the result.
6. An earthen vessel similar to a cupel, formerly used in testing metals.
7. A series of questions, problems, etc., intended to measure the extent of knowledge, aptitudes, intelligence, and other mental traits: an intelligence test. See synonyms under PROOF. [<OF, a cupel, pot <L testum an earthen vessel <testa potsherd, shell]
—test′a·ble adjective

(test) noun
1. Zool. A rigid external case or covering of many invertebrates, as a sea urchin or mollusk; a shell.
2. Bot. A testa. [<L testa shell]

(test) v.t.
To attest. [<OF tester bequeath <L testari be a witness. See TESTAMENT.]