This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A set of statements or principles devised to explain a group of facts or phenomena, especially one that has been repeatedly tested or is widely accepted and can be used to make predictions about natural phenomena.

n. The branch of a science or art consisting of its explanatory statements, accepted principles, and methods of analysis, as opposed to practice: a fine musician who had never studied theory.

n. A set of theorems that constitute a systematic view of a branch of mathematics.

n. Abstract reasoning; speculation: a decision based on experience rather than theory.

n. A belief or principle that guides action or assists comprehension or judgment: staked out the house on the theory that criminals usually return to the scene of the crime.

n. An assumption based on limited information or knowledge; a conjecture.

n. (logic) A set of axioms together with all statements derivable from them. Equivalently, a formal language plus a set of axioms (from which can then be derived theorems).

n. A doctrine, or scheme of things, which terminates in speculation or contemplation, without a view to practice; hypothesis; speculation.

n. An exposition of the general or abstract principles of any science.

n. The science, as distinguished from the art.

n. The philosophical explanation of phenomena, either physical or moral

n. At this point we may again for a moment turn aside to consider the so-called Conscious Automaton Theory.

n. Contemplation.

n. Perception or consideration of the relations of the parts of an ideal construction, which is supposed to render completely or in some measure intelligible a fact or thing which it resembles or to which it is analogous; also, the ideal construction itself.

n. An intelligible conception or account of how something has been brought about or should be done.

n. Plan or system; scheme; method.

n. In mathematics, a series of results belonging to one subject and going far toward giving a unitary and luminous view of that subject: as, the theory of functions.

n. Specifically, in music, the science of composition, as distinguished from practice, the art of performance.

n. a belief that can guide behavior

n. 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

n. a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena

"Thermodynamic laws are unified with mechanical theory through an *application of information theory*."

binary theory   

ideal    actuality theory    spiral theory    the bow-wow    solar theory    theory of cognition    visual sensation    unitary theory    theory of sets    aggregation theory   

theorem    theorise    theorize    theoretical   

hypothesis    speculation    hypothesis    speculation    supposition   

Alfieri    Cleary    Erie    Kiri    Leary    beery    bleary    cheery    deary    dreary   

Science   

principle    method    doctrine    science    study    problem    policy    fact    facts    experience