What is a measure of disorder orrandomness called?

The measure of disorder or randomness in a system is called entropy. Entropy is a fundamental concept in thermodynamics, information theory, statistical mechanics, and many other fields. In simple terms, entropy quantifies the degree of randomness or unpredictability in a system. The higher the entropy, the more disordered or unpredictable the system is. Conversely, a system with low entropy is more ordered and predictable.