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Definitions of theory

  1. a tentative theory about the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena; " a scientific hypothesis that survives experimental testing becomes a scientific theory"; " he proposed a fresh theory of alkalis that later was accepted in chemical practices"
  2. 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"
  3. 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"
  4. A doctrine, or scheme of things, which terminates in speculation or contemplation, without a view to practice; hypothesis; speculation.
  5. An exposition of the general or abstract principles of any science; as, the theory of music.
  6. The science, as distinguished from the art; as, the theory and practice of medicine.
  7. The philosophical explanation of phenomena, either physical or moral; as, Lavoisier's theory of combustion; Adam Smith's theory of moral sentiments.
  8. Abstract or general principles of a science or art considered apart from practice; hypothesis; a general principle intended to explain observed facts; individual idea.
  9. An hypothesis; a reasoned and probable explanation of the manner in which something has been produced or will be produced; a doctrine of which absolute proof is lacking.
  10. An explanation, or system of anything: an exposition of the abstract principles of a science or art: speculation as opposed to practice.
  11. Explanation or system of anything; unproved explanation of any series of phenomena; exposition of abstract principles; speculation.
  12. A plan or scheme subsisting in the mind only; abstract knowledge of any art; a proposed explanation: speculation.
  13. Speculation; a doctrine or scheme which terminates in mere speculation; an exposition of the general principles of anything; the science distinguished from the art of a thing; the philosophical or scientific explanation of phenomena.
  14. A doctrine or scheme of things terminating in speculation, and without a view to practice; the abstract principles of any art considered without reference to practice; the opposite of practice; the science, distinguished from the art; the philosophical explanation of phenomena, either physical or moral; a scheme or system founded on inferences drawn from certain principles, or from the particular arrangement of certain facts.
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Quotes of theory

  1. There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened. – Douglas Adams
  2. It was an absurd theory that by cutting taxes you would increase government revenues, because the growth of the economy would create an overflow of taxes that would fall into the government coffers. – Sidney Blumenthal
  3. Of thousands of others, nearer the centre of the explosion, there was no trace. They vanished. The theory in Hiroshima is that the atomic heat was so great that they burned instantly to ashes- except that there were no ashes. – Wilfred Burchett
  4. What has any poet to trust more than the feel of the thing? Theory concerns him only until he picks up his pen, and it begins to concern him again as soon as he lays it down. – John Ciardi
  5. I think that climatic changes have a natural causes according many geological data... I am very glad to sign the U. S. Senate's report of scientists against the theory of man -made global warming. – Uberto Crescenti
  6. The theory of evolution by cumulative natural selection is the only theory we know of that is in principle capable of explaining the existence of organized complexity. – Richard Dawkins
  7. As the new endogenous growth theory suggests, TFP growth is closely related to accumulation of the intangible capitals, such as human capital and research and development. – Toshihiko Fukui
  8. Many, many, many small moves of many kinds can bring a way to manage change. The theory can come later. – Flora Lewis
  9. Never abandon a theory that explains something until you have a theory that explains more. – John McCarthy
  10. Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve. – Karl Popper
  11. My favorite laser disk ever was the laser disk for The Graduate, which had a commentary track that wasn't even the filmmakers, it was a professor, some film criticism guy who just happen to be this amazing commentator who went off into the whole theory of comedy. – Jay Roach
  12. Vietnam was a lie but at least there was a political agenda. It was the domino theory Iraq is about nothing but George Bush's ego laced with imperialist ambitions. And it was helped by your government. – Donald Sutherland
  13. Einstein was searching for String Theory It not only reconciles General Relativity to Quantum Mechanics, but it reconciles Science and the Bible as well. – Roy H. Williams
  14. There was a long history of speculation that in quantum gravity, unlike Einstein's classical theory it might be possible for the topology of spacetime to change. – Edward Witten
  15. In theory I'd like to work in a group. But the group I'd like to work in, all the musicians in them are long since dead. – Robert Wyatt

Usage examples for theory

  1. I'm sure my theory is right." – Tom Swift and his Air Glider or, Seeking the Platinum Treasure by Victor Appleton
  2. The theory of books is noble. – Emerson and Other Essays by John Jay Chapman
  3. My theory is that we all eat too much. – The Firing Line by Robert W. Chambers
  4. " We heard nothing of the kind," said I. " And what is your theory of this poor fellow's death?" – The Hound of the Baskervilles by A. Conan Doyle
  5. I mentioned the red- spark theory – Careers of Danger and Daring by Cleveland Moffett
  6. " That's theory I smiled. – The Million-Dollar Suitcase by Alice MacGowan Perry Newberry
  7. We'll help you with your theory – The Holes and John Smith by Edward W. Ludwig
  8. And here, as elsewhere, theory must wait upon fact. – The Expositor's Bible: The Gospel of St. John, Vol. I by Marcus Dods
  9. That is my theory – The Mystery of a Hansom Cab by Fergus Hume
  10. " I must ask Lady Downham to introduce me," he said to himself, wondering whether the proud face would smile upon him, and, if she carried into practice her favorite theory of saying what she thought, what she would say to him. – Dora Thorne by Charlotte M. Braeme
  11. I suppose you've no theory as to where they have gone?" – Jack O' Judgment by Edgar Wallace
  12. The central point of this work is the exposition of his theory of the romantic school of poetry. – Halleck's New English Literature by Reuben P. Halleck
  13. What's your own theory of the matter? – The House of a Thousand Candles by Meredith Nicholson
  14. " To prove a theory that I had formed, and which I have mentioned in a vague sort of way," went on Ashton- Kirk, " I asked Sagon why he had used a bayonet. – Ashton-Kirk, Investigator by John T. McIntyre
  15. Oh, there may be a theory – Angela's Business by Henry Sydnor Harrison
  16. This is a comfortable theory – Marie by Laura E. Richards
  17. It is all a theory I suppose. – The Lost Art of Reading by Gerald Stanley Lee
  18. But it is only a theory of mine. – The Film Mystery by Arthur B. Reeve
  19. How's that for a theory – The Monk of Hambleton by Armstrong Livingston
  20. And the half- startled look in the wide- opened eyes, meeting his in their straight glance, confirmed him in his theory – The Heath Hover Mystery by Bertram Mitford

Rhymes for theory