1. in a manner relating to or occurring at constant temperature; at the same temperature throughout
Usage: technical; physics and chemistry

Examples

• The gas expanded isothermally, maintaining a constant temperature throughout the process.
• In an isothermal compression, the system is cooled isothermally to keep the temperature constant.
• The reaction proceeded isothermally at 25 degrees Celsius.
• Engineers designed the system to operate isothermally to improve efficiency.
• The liquid was heated isothermally in a water bath to ensure uniform temperature distribution.