diagrammaticaladj.
Etymology: See -al suffix1.Previous versions of the OED give the stress as: diagraˈmmatical.
society > communication > representation > a plastic or graphic representation > graphic representation > drawing plans or diagrams > [adjective] > diagram
1880 15 May 637 In a diagrammatical form.
This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2019).