The term "color index" can refer to different concepts based on the context in which it is used. Here are a few possible meanings: 1. **Color Index in Chemistry and Materials**: This refers to a standardized system used to identify and categorize colors based on their chemical composition, specifically for pigments and dyes. For example, the Color Index International (CII) categorizes dyes and pigments with unique identifiers that help manufacturers and artists choose colors accurately.
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