By Gaylon West.


theory (n.)
Definition of English "theory" at Dictionary.com
- a coherent group of tested general propositions, commonly regarded as correct, that can be used as principles of explanation and prediction for a class of phenomena: example: Einstein's theory of relativity.
Synonyms: principle, law, doctrine.
History of English word
1590s, "conception, mental scheme," from Late Latin theoria (Jerome), from Greek theoria"contemplation, speculation; a looking at, viewing; a sight, show, spectacle, things looked at," from theorein "to consider, speculate, look at," from theoros "spectator," from thea "a view" (see theater) + horan "to see," possibly from PIE root *wer- (4) "to perceive" (see ward (n.)).
- http://www.etymonline.com/

G2335 θεωρέω Thayer Definition:
1) a viewing, beholding 2) that which is viewed, a spectacle, sight [perhaps from G2300: theaomai - Thayer Definition: 1) to behold, ].