Ideogram: noun,  A written character symbolizing the idea of a thing without indicating the sounds used to say it, e.g., numerals and Chinese characters (from Oxford Dictionaries – Copyright Oxford University Press)  

Ideogram examples

IdeaGram:  (undefined in the Oxford Dictionary); A uniquely evolutionary approach to visual diagramming as a method to analyze and convey the intrinsic ideas, content, and wisdom contained in written or narrative material.