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.
TOPIC: TYPES OF CRITICAL POINTS OF MULTI-VARIABLE FUNCTIONS. Consider a function f(x,y) of two variables. At any critical point (x0,y0) of f(x,y), the tangent plane is flat, or, in other words the best linear appoximation h(x,y) to f(x,y) at (x0,y0) is constant.