theory
Definitions
A supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
A set of principles on which the practice of an activity is based.
A well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed.
Examples
The scientist proposed a new theory to explain the sudden climate changes.
In theory, the project should be completed by the end of the week.
He has a fascinating theory about why people prefer certain colors over others.
Synonyms
hypothesis conjecture postulate premise supposition speculation concept