cy·a·nine (s   -n n , -n n)n. Any of various blue dyes, used to sensitize photographic emulsions to a greater range of light. |
cyanine [ˈsaɪəˌniːn], cyanin [ˈsaɪənɪn]
n
1. (Clothing, Personal Arts & Crafts / Dyeing) a blue dye used to extend the sensitivity of photographic emulsions to colours other than blue and ultraviolet
2. (Clothing, Personal Arts & Crafts / Dyeing) any of a class of chemically related dyes, used for the same purpose
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