12. (n.)test the hard, protective shell or covering of certain invertebrates, as echinoderms.
Etymology: (1535–45; < L testa tile, shell)
Definition of 'Test'
Princeton's WordNet
1. (noun)trial, trial run, test, tryout trying something to find out about it "a sample for ten days free trial"; "a trial of progesterone failed to relieve the pain"
2. (noun)test, mental test, mental testing, psychometric test any standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etc "the test was standardized on a large sample of students"
3. (noun)examination, exam, test a set of questions or exercises evaluating skill or knowledge "when the test was stolen the professor had to make a new set of questions"
4. (noun)test, trial the act of undergoing testing "he survived the great test of battle"; "candidates must compete in a trial of skill"
5. (noun)test, trial, run the act of testing something "in the experimental trials the amount of carbon was measured separately"; "he called each flip of the coin a new trial"
6. (verb)test a hard outer covering as of some amoebas and sea urchins
7. (verb)test, prove, try, try out, examine, essay put to the test, as for its quality, or give experimental use to "This approach has been tried with good results"; "Test this recipe"
8. (verb)screen, test test or examine for the presence of disease or infection "screen the blood for the HIV virus"
9. (verb)quiz, test examine someone's knowledge of something "The teacher tests us every week"; "We got quizzed on French irregular verbs"
10. (verb)test show a certain characteristic when tested "He tested positive for HIV"
11. (verb)test achieve a certain score or rating on a test "She tested high on the LSAT and was admitted to all the good law schools"
12. (verb)test determine the presence or properties of (a substance)
13. (verb)test undergo a test "She doesn't test well"
7. (noun)Test a reaction employed to recognize or distinguish any particular substance or constituent of a compound, as the production of some characteristic precipitate; also, the reagent employed to produce such reaction; thus, the ordinary test for sulphuric acid is the production of a white insoluble precipitate of bariumsulphate by means of some soluble barium salt
8. (noun)Test a witness
9. (noun)Test alt. of Testa
10. (verb)Test to refine, as gold or silver, in a test, or cupel; to subject to cupellation
11. (verb)Test to put to the proof; to prove the truth, genuineness, or quality of by experiment, or by some principle or standard; to try; as, to test the soundness of a principle; to test the validity of an argument
12. (verb)Test to examine or try, as by the use of some reagent; as, to test a solution by litmus paper