adi·​a·​bat | \ˈa-dē-ə-ˌbat\
variants: or less commonly adiabatic \ˌa-​dē-​ə-​ˈba-​tik, ˌā-​ˌdī-​ə-​ \
plural -s

Definition of adiabat 

: a curve or line plotted using coordinates selected to represent the pressure and volume or the temperature and entropy of matter during an adiabatic process

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of adiabat

1872, in the meaning defined above

History and Etymology for adiabat

adiabat, back-formation from adiabatic, adjective; adiabatic, from adiabatic, adjective

Keep scrolling for more

Learn More about adiabat

Statistics for adiabat

Look-up Popularity

Time Traveler for adiabat

The first known use of adiabat was in 1872

See more words from the same year

Comments on adiabat

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


a soft lustrous wool fabric with mohair

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
True or False

Test your knowledge - and maybe learn something along the way.


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!