What does "ideography" mean?

The use of ideograms; semasiography or logography.

Ideography

Common synonyms include: iconography, logography, pictography, semantic analysis, semantic interpretation, symbol design.

noun

noun ·Rare ·Advanced level

Noun

1
The use of ideograms; semasiography or logography. countable, uncountable
"The classical Yi ideography"
2
the use of ideograms in writing wordnet

From ideo- + -graphy.