verb (used with object), di·a·gramed or di·a·grammed, di·a·gram·ing or di·a·gram·ming.
Origin of diagram
British Dictionary definitions for diagramming
verb -grams, -gramming or -grammed or US -grams, -graming or -gramed
Word Origin for diagram
Word Origin and History for diagramming
1610s, from French diagramme, from Latin diagramma, from Greek diagramma "geometric figure, that which is marked out by lines," from diagraphein "mark out by lines, delineate," from dia- "across, out" (see dia-) + graphein "write, mark, draw" (see -graphy). The verb is 1840, from the noun.