Definition of "adiabatic" []

• Of, relating to, or being a reversible thermodynamic process that occurs without gain or loss of heat and without a change in entropy. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• ""… there need be no entropy generated in adiabatic processes – which occur frequently in living systems …"."
• "Air must be compressed, then cooled, and then allow to expand, this is called adiabatic cooling."
• "Cv, also sometimes called the adiabatic index or the heat capacity ratio or the isentropic expansion factor"