1. The act of symbolizing, or the state of being symbolized; as, symbolism in Christian art is the representation of truth, virtues, vices, etc, by emblematic colours, signs, and forms.
2. A system of symbols or representations.
3. (Science: chemistry) The practice of using symbols, or the system of notation developed thereby. A combining together of parts or ingredients.
4. The science of creeds; symbolics.