WordReference Random House Learner's Dictionary of American English © 2014
test1 /tɛst/USA pronunciation  n. [countable]
  1. a set of problems, questions, etc., for evaluating a person's abilities, skills, or performance:a driver's test.
  2. the means by which the quality of anything is determined:a test of a new product.
  3. a trial of the quality of something:to put the new car to the test.

v. 
  1. to (cause someone to) undergo a test of any kind: [+ object]The school has to test you on your writing ability.[no object]The hospital wants to test for diabetes.
  2. [no object] to perform on a test:People test better in a relaxed environment.
  3. See -test-.
-test-, root. 

    -test- comes from Latin, where it has the meaning "witness.'' This meaning is found in such words as: attest, contest, detest, incontestable, intestate, pretest, protest, Protestant, protestation, test, testament, testate, testify, testimonial, testimony.


Collins Concise English Dictionary © HarperCollins Publishers::

test /tɛst/ vb
  1. to ascertain (the worth, capability, or endurance) of (a person or thing) by subjection to certain examinations; try
  2. (often followed by for) to carry out an examination on (a substance, material, or system) by applying some chemical or physical procedure designed to indicate the presence of a substance or the possession of a property: to test food for arsenic, to test for magnetization
  3. (intransitive) to achieve a specified result in a test: a quarter of the patients at the clinic tested positive for the AIDS virus
  4. (transitive) to put under severe strain: the long delay tested my patience
n
  1. a method, practice, or examination designed to test a person or thing
  2. a series of questions or problems designed to test a specific skill or knowledge
  3. a standard of judgment; criterion
  4. a chemical reaction or physical procedure for testing a substance, material, etc
  5. a chemical reagent used in such a procedure
  6. the result of the procedure or the evidence gained from it
  7. See test match
  8. archaic a declaration or confirmation of truth, loyalty, etc; oath
  9. (modifier) performed as a test: test drive, test flight
Etymology: 14th Century (in the sense: vessel used in treating metals): from Latin testum earthen vessel

ˈtestable adj ˌtestaˈbility n ˈtesting adj
test /tɛst/ n
  1. the hard or tough outer covering of certain invertebrates and tunicates
Etymology: 19th Century: from Latin testa shell



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