noun, plural the·o·ries.
Origin of theory
Examples from the Web for theory
Is it sort of evidence of the Gladwellian 10,000 hours theory?Coffee Talk with Fred Armisen: On ‘Portlandia,’ Meeting Obama, and Taylor Swift’s Greatness|Marlow Stern|January 7, 2015|DAILY BEAST
But a 2011 study of genetic evidence from 30 ethnic groups in India disproved this theory.
But, in theory, that started to change last week with the first meeting of SIX, the State Innovation Exchange.
So I was happy to see that the European theory of terroir was in action, promoting with pride the qualities of a specific region.
The theory was first floated in the 1950s by Professor Homer Dubs of Oxford University.
For we would keep the theory in mind by visible signs, which act most powerfully upon the minds of children.Guide to the Kindergarten and Intermediate Class and Moral Culture of Infancy.|Elizabeth P. Peabody
It comported with their theory of the true objects of government.The Unconstitutionality of Slavery|Lysander Spooner
"Anyway, I'll bet she blows back w'ere she come from, to-night," persisted the advocate of this theory.The Cruise of the Dry Dock|T. S. Stribling
I tried to recall my theory, and to close my eyes to the pathetic beauty of the face before me; but it was altogether in vain.The Doctor's Dilemma|Hesba Stretton
But, in the language of a distinguished citizen of the old republic, 'we are confronted by a condition, not a theory.'Comrades|Thomas Dixon
British Dictionary definitions for theory
noun plural -ries
Word Origin for theory
Word Origin and History for theory
1590s, "conception, mental scheme," from Late Latin theoria (Jerome), from Greek theoria "contemplation, speculation, a looking at, things looked at," from theorein "to consider, speculate, look at," from theoros "spectator," from thea "a view" + horan "to see" (see warrant (n.)). Sense of "principles or methods of a science or art (rather than its practice)" is first recorded 1610s. That of "an explanation based on observation and reasoning" is from 1630s.
Medicine definitions for theory
Science definitions for theory
Culture definitions for theory
In science, an explanation or model that covers a substantial group of occurrences in nature and has been confirmed by a substantial number of experiments and observations. A theory is more general and better verified than a hypothesis. (See Big Bang theory, evolution, and relativity.)