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English Dictionary - With Multi-Lingual Search Definitions theory noun (theor, ies, -) (countable) An unproven conjecture. I have a about who broke into the school last night, but I have no proof to back it up. (uncountable) An expectation of what should happen, barring unforeseen circumstances. So we"ll be there in three hours? " That"s the . (countable) (science) A coherent statement or set of statements that attempts to explain observed phenomenon, phenomena. There is now a well-developed of electrical charge. (countable) (science) A logical structure that enables one to deduce the possible results of every experiment that falls within its purview. The of relativity was proposed by Einstein. (uncountable) (mathematics) A field of study attempting to exhaustively describe a particular class of constructs. Knot classifies the mappings of a circle into 3-space. (countable) (logic) A set of axioms together with all statements derivable from them. A is consistent if it has a model. Etymology: English since 1613, from French théorie < Latin theoria < Greek (polytonic, ) ("contemplation, speculation, a looking at, things looked at") < (polytonic, ) (to look at, view, consider, examine) < (polytonic, ) (spectator) < (polytonic, ) (a view) + (polytonic, á) (to see, to look).      Full Definition of theory  Find:   Words Starting With:   Words Ending With:   Words Containing:   Words That Match:    Translate Into:    Dutch   French   German    Italian   Spanish     Show 51015202550 results per page. Enter your search terms Submit search form   Web www.allwords.com Browse the Dictionary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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