- a figure, usually consisting of a line drawing, made to accompany and illustrate a geometrical theorem, mathematical demonstration, etc.
- a drawing or plan that outlines and explains the parts, operation, etc., of something: a diagram of an engine.
- a chart, plan, or scheme.
- to represent by a diagram; make a diagram of.
- a sketch, outline, or plan demonstrating the form or workings of something
- a pictorial representation of a quantity or of a relationship
- to show in or as if in a diagram
