lexigram

1. (psychology) A symbol that represents a word but is not necessarily indicative of the object referenced by the word, used in studies of communicationExamples: "Near-synonyms: lexigraph (polysemic, sometimes synonymous), logogram, logograph"; "Instead of ASL, Savage-Rumbaugh used an extensive ‘lexigram’, a matrix of 256 geometrical shapes on a board. Instructors touch the symbols, which represent verbs and nouns, to create simple requests or commands."; "Each chimp next learned to press the lexigram corresponding to a food item that it had seen the teacher put in an opaque container."