Diagrammatic \Di`a*gram*mat"ic\, a. Pertaining to, or of the nature of, a diagram; showing by diagram. -- Di`a*gram*mat"ic*ly, adv. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

diagrammatic adj : shown or represented by diagrams [syn: diagrammatical]

Source: WordNet (r) 2.0
 

Diagrammatic \Di`a*gram*mat"ic\, a. Pertaining to, or of the nature of, a diagram; showing by diagram. -- Di`a*gram*mat"ic*ly, adv.

Source: Webster's Revised Unabridged Dictionary (1913)