|—n , pl -ries|
|1.||a system of rules, procedures, and assumptions used to produce a result|
|2.||abstract knowledge or reasoning|
|3.||a speculative or conjectural view or idea: I have a theory about that|
|4.||an ideal or hypothetical situation (esp in the phrase in theory)|
|5.||a set of hypotheses related by logical or mathematical arguments to explain and predict a wide variety of connected phenomena in general terms: the theory of relativity|
|6.||a nontechnical name for hypothesis|
|[C16: from Late Latin theōria, from Greek: a sight, from theōrein to gaze upon]|
theory the·o·ry (thē'ə-rē, thēr'ē)
A systematically organized body of knowledge applicable in a relatively wide variety of circumstances, especially a system of assumptions, accepted principles, and rules of procedure devised to analyze, predict, or otherwise explain the nature or behavior of a specified set of phenomena.
Abstract reasoning; speculation.
|theory (thē'ə-rē, thîr'ē) Pronunciation Key
A set of statements or principles devised to explain a group of facts or phenomena. Most theories that are accepted by scientists have been repeatedly tested by experiments and can be used to make predictions about natural phenomena. See Note at hypothesis.
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.)