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The triple point is a specific condition of temperature and pressure where a substance can exist in all three phases—solid, liquid, and gas—simultaneously in equilibrium. This unique point is represented on a phase diagram, which graphically illustrates the phases of a substance under varying conditions of temperature and pressure. Near the triple point, a liquid's properties, such as density and compressibility, are more akin to those of a solid than a gas. The concept of the triple point is crucial in understanding the behavior of substances and is used in various scientific and industrial applications.123

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