This is Einstein's famous theory.
- Einstein's ideas about relativity are an example of the theory of relativity.
- The scientific principles of evolution that are used to explain human life are an example of the theory of evolution.
- Obs. a mental viewing; contemplation
- a speculative idea or plan as to how something might be done
- a systematic statement of principles involved: the theory of equations in mathematics
- a formulation of apparent relationships or underlying principles of certain observed phenomena which has been verified to some degree
- that branch of an art or science consisting in a knowledge of its principles and methods rather than in its practice; pure, as opposed to applied, science, etc.
- popularly a mere conjecture, or guess
Origin of theoryfrom French or LL: French théorie from Late Latin theoria from Classical Greek the?ria, a looking at, contemplation, speculation, theory from the?rein: see theorem
- 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.
- 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.
- A set of theorems that constitute a systematic view of a branch of mathematics.
- Abstract reasoning; speculation: a decision based on experience rather than theory.
- 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.
- An assumption based on limited information or knowledge; a conjecture.
Origin of theoryLate Latin theōria from Greek theōriā from theōros spectator probably theā a viewing -oros seeing ( from horān to see )
(countable and uncountable, plural theories)
- (sciences) A coherent statement or set of ideas that explains observed facts or phenomena, or which sets out the laws and principles of something known or observed; a hypothesis confirmed by observation, experiment etc. [from 17th c.]
- (uncountable) The underlying principles or methods of a given technical skill, art etc., as opposed to its practice. [from 17th c.]
- (mathematics) A field of study attempting to exhaustively describe a particular class of constructs. [from 18th c.]
- Knot theory classifies the mappings of a circle into 3-space.
- A hypothesis or conjecture. [from 18th c.]
- (countable, 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).
- A theory is consistent if it has a model.
In scientific discourse, the sense “unproven conjecture" is discouraged (with hypothesis or conjecture preferred), due to unintentional ambiguity and intentional equivocation with the sense “well-developed statement or structure".
From Late Latin theÅria, from Ancient Greek Î¸ÎµÏ‰ÏÎ¯Î± (theÅria, “contemplation, speculation, a looking at, things looked at"), from Î¸ÎµÏ‰ÏÎÏ‰ (theÅreÅ, “I look at, view, consider, examine"), from Î¸ÎµÏ‰ÏÏŒÏ‚ (theÅros, “spectator"), from Î¸ÎÎ± (thea, “a view") + á½ÏÎ¬Ï‰ (horaÅ, “I see,look").
theory - Computer Definition
A formulation of relationships or principles based on considerable factual evidence objectively analyzed to explain the operation of certain phenomena. A theory is in sharp contrast to pure speculation, which is an opinion based on incomplete evidence or information. See also law.
An unproven concept.