- the state or condition of being unchangeable:These findings contradict previous myths about the genetic immutability of intelligence at birth.The ancient Christian doctrine of God's immutability states that God doesn't change, has never changed, and will never change.
- (in object-oriented programming) the characteristic of an object with a fixed structure and properties whose values cannot be changed: Informing the compiler about the immutability of the variable allows for optimizing the code and logic behind the implementation of the code.
