iconology n 1: the branch of art history that studies visual images and their symbolic meaning (especially in social or political terms)
Iconology \I`co*nol"o*gy\, n. [Gr. ?; e'ikw`n an image + ? discourse: cf. F. iconologie.] The discussion or description of portraiture or of representative images. Cf. {Iconography}. [1913 Webster]
19 Moby Thesaurus words for "iconology": allegory, charactery, cipher, conventional symbol, emblem, ideogram, logogram, logotype, love knot, pictogram, symbol, symbolic system, symbolism, symbolization, symbology, token, totem, totem pole, type