tricarbocyanine

noun
tri·​carbocyanine | \"+\
variants: or tricarbocyanine dye

Definition of tricarbocyanine 

: any of a class of cyanine dyes in whose structure the two heterocyclic rings are joined by a seven-carbon chain (as =CH−CH=CH−CH=CH−CH=CH−) especially : any such dye containing two quinoline rings

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History and Etymology for tricarbocyanine

tri- + carbocyanine

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