noun

a simplified drawing showing the appearance, structure, or workings of something; a schematic representation.

a diagram of the living room

drawing,line drawing,illustration,picture,artist’s impression,schematic representation,representation,scale drawing,technical drawing,plan,figure,sketch,draft,outline,delineation,exploded view,cutaway,layout,graphic,schema

verb

represent (something) in graphic form.

the experiment is diagrammed on page fourteen