what mean the iconography?

Answer 1

Read

http://en.wikipedia.org/wiki/Iconography

Answer 2

Iconography is the branch of Art History which studies the identification, description and the interpretation of the content of images. The word iconography literally means "image writing", and comes from the Greek εικον (image) and γραφειν (to write).

Answer 3

Iconography means "image description", like "geography" is the description of the earth.
It refers to holy pictures, and the way you can recognize the saints by their attributes.
E. g. St Peter in Western iconography nearly always carries a key,
the evangelists are usually accompagnied by their respective human, eagle, bull or lion.
In art history jargon the word has come to have a wider meaning of including favourite motives/attributes in secular pictures as well.

Answer 4

Iconography is variously described as "the study of subjects and themes in works of art," "a set of images or symbols conventionally associated with a subject," or "the meaning assigned to a set of images or symbols according to a particular convention." "the study of images, their formation, transmission, and transformation in the various cultures and civilizations and of their intrinsic meaning."
From:
http://www.lib.duke.edu/lilly/cdar/booktypes/iconography.htm