adiabatic

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

Definition of adiabatic

: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


Learn More about adiabatic


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).

Love words? Need even more definitions?

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

WORD OF THE DAY

all at once

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
True or False

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

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ

Love words? Need even more definitions?

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