Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

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

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. (of a thermodynamic process) Occurring without gain or loss of heat.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Not giving out or receiving heat.

from The Century Dictionary and Cyclopedia

  • Without transference: used in thermodynamics of a change in volume, whether by expansion or contraction, unaccompanied by a gain or loss of heat.
  • n. An adiabatic line.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. occurring without loss or gain of heat

Etymologies

From Greek adiabatos, impassable : a-, not; see a-1 + diabatos, passable (dia-, dia- + batos, passable from bainein, to go.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek ἀδιάβατος (adiabatos, "impassible"), from ἀ (a, "not") + διά (dia, "through") + βατός (batos, "passable"), from βαίνειν (bainein, "to go"). See βαίνω (bainō). (Wiktionary)

Examples

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