Ideography is a writing system. See ideogram A Chinese character. ...
Ideography is also a branch of lexicography. Lexicography is either of two things Practical lexicography is the art or craft of writing dictionaries. ...
The science of making ideographic dictionaries. Ideographic or conceptual (ideological) dictionaries as opposed to alphabetical dictionaries are characterized by the way the dictionary entries are organized. The usual way of doing it is to put the words by their semantic relations. The examples of ideographic dictionaries are as follows: thesauri, thematic dictionaries, picture dictionaries.
References
Burkhanov, Igor (1999). Linguistic Foundations of Idegraphy: Semantic Analysis and Ideographic Dictionaries. Rzeszów: Wydawnictwo Wyższej Szkoły Pedagogicznej. ISBN 83-87288-98-5.
It is also one of the basic gestalts in Western ideography (as opposed to the basic elements, which are derived entities).
In the earliest Chinese ideography it appears as a sign for perfection and 10, the most perfect number.
In Western ideography the cross, and its graphic opposite, the circle, are the most common basic gestalts, and appear in many different Western ideographic systems.