A set of independent edges in a given graph, i.e. a set of edges which do not intersect, such that pairs of vertices are "matched" to each other one to one.
The process by which things are matched together or paired up.
The same as another; sharing the same design.
In proportion (to), proportionate.
Of a typeface, having characters with natural (non-uniform) width (in contrast to monospace typefaces).
At a constant ratio (to). Two magnitudes (numbers) are said to be proportional if the second varies in a direct relation arithmetically to the first. Symbol: ∝.