Meaning: A treeless grassy plain. Classified under: Nouns denoting spatial position. Hypernyms (prairie is a kind of...): grassland (land where grass or grasslike vegetation grows and is the dominant form of plant life). Instance hyponyms:
In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium. For example, the triple point of mercury occurs at a temperature of â38.83440 Â°C and a pressure of 0.2 m Pa.
Example Problems involving the Triple Point of Water. Problem 1: Temperature vs. Pressure. Figure 2 Given the phase diagram for water above, what happens to the melting point as you increase pressure? The figure shows that as the pressure increases, the melting point increases to a maximum at the triple point.