Pronunciation: (graf, gräf),[key] —n. 1. a diagram representing a system of connections or interrelations among two or more things by a number of distinctive dots, lines, bars, etc.
2. Math. a. a series of points, discrete or continuous, as in forming a curve or surface, each of which represents a value of a given function.
b. Also called linear graph. a network of lines connecting points.
3. a written symbol for an idea, a sound, or a linguistic expression.
—v.t. 1. Math.to draw (a curve) as representing a given function.
2. to represent by means of a graph.
var. of grapho- before a vowel: grapheme.
a combining form meaning “drawn,” “written” (lithograph; monograph); specialized in meaning to indicate the instrument rather than the written product of the instrument (telegraph; phonograph).