The definition of a diagram is a graph, chart, drawing or plan that explains something by showing how the parts relate to each other.(noun)
An example of diagram is a chart showing how all the departments within an organization are related.
See diagram in Webster's New World College Dictionary
Origin: Gr diagramma < diagraphein, to mark out by lines, draw < dia- (see dia-) + graphein, to write (see graphic)
See diagram in American Heritage Dictionary 4
Origin: Latin diagramma, figure
Origin: , from Greek, a figure worked out by lines, plan
Origin: , from diagraphein, to mark out, delineate
Origin: : dia-, dia-
Origin: + graphein, to write; see gerbh- in Indo-European roots.
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