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 22 Nov. 2024.

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!

Popular in Grammar & Usage

See All

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Plural and Possessive Names: A Guide

The Difference Between 'i.e.' and 'e.g.'

Why is '-ed' sometimes pronounced at the end of a word?

What's the difference between 'fascism' and 'socialism'?
See All

Popular in Wordplay

See All

8 Words with Fascinating Histories

8 Words for Lesser-Known Musical Instruments

Birds Say the Darndest Things

10 Words from Taylor Swift Songs (Merriam's Version)

10 Scrabble Words Without Any Vowels
See All

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Word Game Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A daily crossword with a twist
turkey-looking-at-camera
Giving Thanks Quiz Decide which words express gratitude and which gi...