अर्थ : A feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it.
अर्थ : Unaffected by a designated operation or transformation.
अर्थ : Unvarying in nature.
							उदाहरण : 
							Maintained a constant temperature.
							Principles of unvarying validity.
							
पर्यायवाची : changeless, constant, unvarying