TRIPLE POINT

The condition of temperature and pressure under which the gaseous, liquid, and solid phases of a substance can exist in equilibrium. For water, at a standard pressure of one (1) atmosphere, this represents a temperature of 273.16 Kelvin (K), 0.01C (Celsius), and 32.02F Fahrenheit. Also see Temperature Scale, Celsius (Temperature Scale), Centigrade (Temperature Scale), and Fahrenheit (Temperature Scale).