Definition

1. Adjective:
   • Occurring without loss or gain of heat: Describes a thermodynamic process where no heat is transferred into or out of the system. The system is perfectly insulated from its surroundings.

Usage and Examples

• Adjective:
  • The compression of air in a bicycle pump is a nearly adiabatic process, as it happens too quickly for significant heat transfer.
  • Scientists study adiabatic cooling to understand cloud formation in the atmosphere.
  • The textbook described the ideal adiabatic expansion of a gas.

Advanced Usage

• "Adiabatic process": The standard term for any thermodynamic process that occurs without heat exchange.
  • In an ideal adiabatic process, any change in the system's internal energy is due solely to work done on or by the system.
• "Adiabatic wall": A theoretical boundary that prevents any heat transfer, defining an adiabatic system.
  • The concept of an adiabatic wall is crucial for defining thermodynamic systems.

Variants and Related Words

• Adiabatically (adverb): In an adiabatic manner.
  • The gas expanded adiabatically.
• Adiabaticity (noun): The condition or quality of being adiabatic.
  • The adiabaticity of the process was assumed in the calculation.

Synonyms

• Isentropic: (In specific contexts for reversible adiabatic processes) Occurring at constant entropy.
• Non-conductive: (In a general thermal sense) Not allowing the transfer of heat.

Related Scientific Terms

• Adiabatic lapse rate: The rate at which atmospheric temperature decreases with height under adiabatic conditions.
  • The dry adiabatic lapse rate is approximately 9.8°C per kilometer.
• Adiabatic invariant: A physical property that remains constant during an adiabatic process.
  • The magnetic moment of a charged particle is an adiabatic invariant in plasma physics.

Adjective

1. occurring without loss or gain of heat
   • adiabatic expansion