The Collaborative International Dictionary
Ideographical
Ideographic \I`de*o*graph"ic\, Ideographical \I`de*o*graph"ic*al\, a. [Cf. F. id['e]ographique.] Of or pertaining to an ideogram; representing ideas by symbols, independently of sounds; as, 9 represents not the word ``nine,'' but the idea of the number itself. -- I`de*o*graph"ic*al*ly, adv.
Wiktionary
ideographical
a. (alternative form of ideographic English)