2 covering for the human body most of the celebrants of the town's bicentennial will be in festive rigâso don't show up in jeans Synonyms apparel, attire, clobber [British slang], clothes, costumery, dress, duds, garments, gear, habiliment(s), habit [archaic], rags, raiment, clothing, rigging, threads, toggery, togs, vestiary, vestments, vesture, ...
It is therefore called the triple point of the substance, and it represents the only point in the phase diagram in which all three states are in equilibrium. Point C is the critical point of the substance, which is the highest temperature and pressure at which a gas and a liquid can coexist at equilibrium. The figure below shows what happens when we draw a horizontal line across a phase diagram at a pressure of exactly 1 atm.
Critical points of some common substances like air, argon, helium and more. At the critical point there is no change of state when pressure is increased or if heat is added. At the critical point the liquid and gas phase can't be distinguished, and there is no point referring to liquid or gas. At the critical point, the physical properties of the liquid and gaseous states are identical. For states above the critical point the gas is supercritical.