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.
equivalence point. point at which moles of hydrogen ions from the acid equal moles of the hydroxide ions from the base; the stoichiometric ratio is equivalent. end point of titration. the point at which the indicator used in a titration changes color because the equivalence point is reached.