Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

adiabatic

play
adjective adi·a·bat·ic \ˌa-dē-ə-ˈba-tik, ˌā-ˌdī-ə-\

Definition of adiabatic

  1. :  occurring without loss or gain of heat <adiabatic expansion of a gas>

adiabatically

play \-ti-k(ə-)lē\ adverb


Origin and Etymology of adiabatic

Greek adiabatos impassable, from a- + diabatos passable, from diabainein to go across, from dia- + bainein to go — more at come


First Known Use: 1859


Seen and Heard

What made you want to look up adiabatic? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

of, relating to, or near a shore

Get Word of the Day daily email!