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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