The Collaborative International Dictionary of English v.0.48:

Pictograph \Pic"to*graph\, n. [See Picture, and -graph.]
   A picture or hieroglyph representing and expressing an idea.
   -- Pic`to*graph"ic, a.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pictographic
    adj 1: consisting of or characterized by the use of pictographs;
           "a pictographic script"; "pictographic stage in the
           development of writing"

Moby Thesaurus II by Grady Ward, 1.0:

43 Moby Thesaurus words for "pictographic":
   abecedarian, allographic, alphabetic, apish, capital, delineatory,
   depictive, echoic, embodying, figurative, graphemic, graphic,
   ideographic, illustrational, illustrative, imitative, incarnating,
   lettered, lexigraphic, limning, literal, logogrammatic,
   logographic, lower-case, majuscule, mimetic, mimish, minuscular,
   minuscule, onomatopoeic, personifying, pictorial, portraying,
   representational, representative, representing, simulative,
   symbolizing, transliterated, typifying, uncial, upper-case,
   vivid