……. is a measure of the degree of randomness or disorder of a system.

Answer

To answer the question, we need to identify the term that describes the measure of randomness or disorder in a system. Here’s the step-by-step solution:

### Step 1: Understand the Concept of Randomness and Disorder
- In thermodynamics, systems can exhibit varying degrees of order and disorder. The more disordered a system is, the higher its randomness.

### Step 2: Identify the Relevant Term
- The term that quantifies this randomness or disorder in a system is known as **Entropy**.

### Step 3: Define Entropy
- Entropy is defined as a measure of the thermal energy of a system that is not available to do work. It is often described in terms of the amount of disorder or randomness present in the system.

### Step 4: Relate Entropy to Temperature
- Entropy can also be expressed as the amount of thermal energy per unit temperature. This relationship highlights how entropy increases with an increase in temperature, which often leads to greater disorder.

### Final Answer
The answer to the question is: **Entropy**.

---