Final answer:
An adiabatic reaction is one in which no heat is transferred between the system and its surroundings. This can be achieved by using effective insulation or performing the process quickly.
Step-by-step explanation:
An adiabatic reaction is one in which there is no heat transfer between the system and its surroundings. Heat is neither lost nor gained during the reaction. Adiabatic processes can be achieved by using effective insulation or by performing the process quickly, allowing little time for heat transfer.