A statement or proposition that can be proven based on previously established statements or principles.

A theory or idea that is put forward as a general principle to explain a phenomenon.

सिद्धांत

English Usage: Einstein's theory of relativity changed our understanding of physics.

Hindi Usage: आइंस्टीन का सिद्धांत वास्तविकता की हमारी समझ को बदल दिया।