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

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