Main Entry:
the·o·ry
Pronunciation:
\ˈthē-ə-rē, ˈthir-ē\
Function:
noun
Inflected Form(s):
plural -ries
Etymology:
Late Latin theoria, from Greek the� ria, from the� rein
Date:
1592
1: the analysis of a set of facts in their relation to one another
2: abstract thought : speculation
3: the general or abstract principles of a body of fact, a science, or an art <music theory>
4 A belief, policy, or procedure proposed or followed as the basis of action <her method is based on the theory that all children want to learn> b: an ideal or hypothetical set of facts, principles, or circumstances — often used in the phrase in theory <in theory, we have always advocated freedom for all>
5: a plausible or scientifically acceptable general principle or body of principles offered to explain phenomena <the wave theory of light>
6 a: a hypothesis assumed for the sake of argument or investigation b: an unproved assumption : conjecture c: a body of theorems presenting a concise systematic view of a subject <theory of equations>
synonyms see hypothesis