#phase

• Antiphase — Being in phase opposition (shifted by exactly 180 degrees) relative to another oscillatory signal, electromagnetic wave, or sound wave of the same frequency. In modern audio technology, antiphase signals are utilized for active noise cancellation.
• Anuric — The feminine form of the adjective anuric; describes a pathological condition, an evolutionary phase of a disease, or a severe renal failure characterized by the complete cessation of urine elimination from the body.
• Austenite — A structural constituent of steels and cast irons, representing an interstitial solid solution of carbon (or other alloying elements) in face-centered cubic iron (gamma-iron). Naturally stable at high temperatures, it can be maintained at room temperature in highly alloyed steels, characterized by excellent ductility, corrosion resistance, and non-magnetic properties.
• Azeotrope — A liquid mixture consisting of two or more chemical components that boils at a constant and fixed temperature, maintaining its identical structural composition in both the liquid and vapor phases. Because the generated vapors have exactly the same proportions of substances as the liquid from which they originate, an azeotrope cannot be separated or purified by simple fractional distillation, behaving thermodynamically like a single pure compound and requiring special separation methods, such as extractive azeotropic distillation.
• Azeotropic — Pertaining to azeotropy, regarding an azeotrope, or presenting the characteristics of a constant boiling mixture. In industrial design and thermodynamics, it describes processes, phase equilibrium phenomena, or separation methods (such as azeotropic distillation) utilized to manipulate or purify complex liquid systems whose components boil without changing their structural composition.
• Azeotropy — A remarkable physicochemical thermodynamic phenomenon characteristic of certain liquid mixtures, consisting in their property to boil at a constant and fixed temperature, generating vapors with a structural composition identical to that of the liquid phase. This phenomenon prevents the separation of components via classical fractional distillation, defining the formation of a minimum or maximum point on the vapor pressure curve and requiring the implementation of specialized separation techniques in chemical engineering.