the act of subjecting to experimental test in order to determine how well something works; "they agreed to end the testing of atomic weapons"
an examination of the characteristics of something; "there are laboratories for commercial testing"; "it involved testing thousands of children for smallpox"
a duplicator (trade mark Xerox) that copies graphic matter by the action of light on an electrically charged photoconductive insulating surface in which the latent image is developed with a resinous powder
someone who sees an event and reports what happened
(law) a person who attests to the genuineness of a document or signature by adding their own signature
(law) a person who testifies under oath in a court of law
be a witness to; "She witnessed the accident and had to testify in court"
perceive or be contemporaneous with; "We found Republicans winning the offices"; "You'll see a lot of cheating in this school"; "The 1960's saw the rebellion of the younger generation against established traditions"; "I want to see results"
not capable of being conquered or vanquished or overcome; "a tribute to his courage...and his unconquerable will"- R.E.Danielson; "faced unconquerable difficulties"