1. A line or tracing denoting varying values of commodities, temperatures, urinary output, etc.; more generally, any geometric or pictorial representation of measurements that might otherwise be expressed in tabular form. 2. Visual display of the relationship between two variables, in which the values of one are plotted on the horizontal axis, the values of the other on the vertical axis; three-dimensional graphs that show relationships between three variables can be depicted and comprehended visually in two dimensions. [G. grapho, to write]
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graph 'graf n a diagram (as a series of one or more points, lines, line segments, curves, or areas) that represents the variation of a variable in comparison with that of one or more other variables
graph·ic 'graf-ik adj
graph vt
1) to represent by a graph
2) to plot on a graph
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(graf) [Gr. graphein to write, or record] a diagram or curve representing varying relationships between sets of data.Medical dictionary. 2011.