tricarbocyanine

noun

tri·​carbocyanine

"+

variants or tricarbocyanine dye

: 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

Word History

Etymology

tri- + carbocyanine

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