Diagram

Di"a*gram (?), n. [Gr. , fr. to mark out by lines; through + to draw, write: cf. F. diagramme. See Graphic.]

1. Geom.

A figure or drawing made to illustrate a statement, or facilitate a demonstration; a plan.

2.

Any simple drawing made for mathematical or scientific purposes, or to assist a verbal explanation which refers to it; a mechanical drawing, as distinguished from an artistical one.

Indicator diagram. Steam Engine See Indicator card, under indicator

© Webster 1913.

Di"a*gram, v. t.

To put into the form of a diagram.

© Webster 1913.

A graphic representation, a schematic drawing.

I use Visio to sketch diagrams of all sorts of stuff. Visio seems to think that diagram is a verb: "Diagram your Information Systems and Business Processes". It isn't. Diagram is a noun. Don't let them verb it.