1) Chemical property 
Miscibility i is the property of substances to mix in all proportions, forming a homogeneous solution. The term is most often applied to liquids, but applies also to solids and gases. Water and ethanol, for example, are miscible because they mix in all proportions. By contrast, substances are said to be immiscible if a significant proportion does ...
• (n.) Capability of being mixed.
(from the article `solution`) It is generally presumed that all gases are completely miscible (mutually soluble in all proportions), but this is true only at normal pressures. At ...
The ability of one liquid to mix with (dissolve in) another liquid.
Mis`ci·bil'i·ty noun [ Confer French miscibilité .] Capability of being mixed. 
Miscibility is the ability of two or more liquids to mix and form a single, homogenous mixture.
Solubility; ability of two or more liquids to form a homogeneous solution.