The process in which no heat enters or leaves the system is termed as

Answer

To solve the question, "The process in which no heat enters or leaves the system is termed as," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Concept of Heat Transfer**:
- In thermodynamics, heat transfer refers to the movement of thermal energy from one system to another. This can occur through various processes such as conduction, convection, and radiation.

2. **Identifying the Type of Process**:
- There are different types of thermodynamic processes, including isothermal, adiabatic, isochoric, and isobaric processes. Each of these processes has distinct characteristics regarding heat transfer.

3. **Defining the Adiabatic Process**:
- An adiabatic process is defined as a thermodynamic process in which there is no heat transfer into or out of the system. This means that the heat exchange (q) is equal to zero (q = 0).

4. **Characteristics of an Adiabatic Process**:
- In an adiabatic process, the system is thermally insulated from its surroundings. Therefore, any change in the internal energy of the system is due solely to work done on or by the system, rather than heat exchange.

5. **Conclusion**:
- Based on the definition and characteristics discussed, we conclude that the process in which no heat enters or leaves the system is termed as an **adiabatic process**.

### Final Answer:
The process in which no heat enters or leaves the system is termed as an **adiabatic process**.

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