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adiabatic

 - 2 dictionary results

ad⋅i⋅a⋅bat⋅ic

[ad-ee-uh-bat-ik, ey-dahy-uh-]
–adjective
occurring without gain or loss of heat (opposed to diabatic ): an adiabatic process.

Origin:
1875–80; < Gk adiábat(os) incapable of being crossed (a- a- 6 + dia- dia- + ba- (s. of baínein to cross) + -tos verbal adj. suffix) + -ic; cf. diabatic


ad⋅i⋅a⋅bat⋅i⋅cal⋅ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To adiabatic
ad·i·a·bat·ic   (ād'ē-ə-bāt'ĭk, ā'dī-ə-)   
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 Greek adiabatos, impassable : a-, not; see a-1 + diabatos, passable (dia-, dia- + batos, passable from bainein, to go; see gwā- in Indo-European roots).]
ad'i·a·bat'i·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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