Wiktionary
n. A mixture that is uniform throughout, and has only one phase.
Wikipedia
A homogeneous mixture is a solid, liquid or gaseous mixture that has the same proportions of its components throughout a given sample (or multiple samples of different proportion). Conversely, a heterogeneous mixture is not uniform in composition, but proportions of its components vary throughout the sample. "Homogeneous" and "heterogeneous" are not absolute terms, but depend on context and size of the sample. In chemistry, a homogeneous suspension of material means that when dividing the volume in half, the same amount of material is suspended in both halves of the substance. However, it might be possible to see the particles under a microscope. An example of a homogeneous mixture is air.
In physical chemistry and material science that refers to substances and mixtures which are in a single phase. This is in contrast to a substance that is heterogeneous.
Usage examples of "homogeneous mixture".
He heard a rumble of voices, and soon he saw all the buyers gathered hi here, a more homogeneous mixture of farmers and planters than had been hi the courtyard.