This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A liquid mixture of two or more substances that retains the same composition in the vapor state as in the liquid state when distilled or partially evaporated under a certain pressure.

n. A mixture of two or more substances whose liquid and gaseous forms have the same composition (at a certain pressure); the substances cannot be separated by normal distillation.

"Ethanol and water at the 96/4 proportions form an azeotrope, which is a mixture of stuff that boils in the same proportions as it is in liquid form."

extractive distillation    eutectic    salt-effect distillation   

azeotropic   

cake    cloy    thoi