adiabatic Meaning, Definition & Usage

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

WordNet

Ad`i*a*bat"ic adjective
Etymology
Gr. not passable; priv. + through + to go.
Definitions
  1. (Physics) Not giving out or receiving heat. -- Ad`i*a*bat`ic*al*ly, adv. Rankine.

Webster 1913