In the form of a diagram. / Of or pertaining to a diagram or to diagrammatics.

In a diagrammatic manner

Archaic form of diagram.

plural of diagramme

The study of the use of diagrams

diagrammatic

(crosswords) Having a blank grid, so that the solver must determine the positions of the black (non-lettered) squares as well as the answers to the clues.

(computing) A software program for constructing diagrams.

Capable of being diagrammed.

plural of diagrammer