a belief that can guide behavior; "the architect has a theory that more is less"; "they killed him on the theory that dead men tell no tales"
a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena; "theories can incorporate facts and laws and tested hypotheses"; "true in fact and theory"
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"
capable of being reached; "a town accessible by rail"
easy to get along with or talk to; friendly; "an accessible and genial man"
easily obtained; "most students now have computers accessible"; "accessible money"
capable of being read with comprehension; "readily accessible to the nonprofessional reader"; "the tales seem more approachable than his more difficult novels"