triple point

noun

: the condition of temperature and pressure under which the gaseous, liquid, and solid phases of a substance can exist in equilibrium

Word History

First Known Use

1872, in the meaning defined above

Time Traveler
The first known use of triple point was in 1872

Dictionary Entries Near triple point

triple play

triple point

tripler

See More Nearby Entries 

Cite this Entry

“Triple point.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/triple%20point. Accessed 30 Mar. 2023.

Copy Citation

Share

Kids Definition

triple point

noun
: the condition of temperature and pressure under which the gaseous, liquid, and solid forms of a substance change into each other at equal rates so that the amount of each always remains the same

Medical Definition

triple point

noun
: the condition of temperature and pressure under which the gaseous, liquid, and solid phases of a substance (as water) can exist in equilibrium

More from Merriam-Webster on triple point

Britannica.com: Encyclopedia article about triple point

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

Listen to the pronunciation of golem

See Definitions and Examples »

Test Your Vocabulary

Which Came First?

  • baby chick with a brown egg
  • hot take or cold shoulder?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?

PLAY
Words at Play
Ask the Editors
Word Games