Definition of fluorescein in English:

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Pronunciation: /ˈflʊərəsiːn/
Pronunciation: /ˈflʊərəsɪn/ Pronunciation: /ˈflɔːrəsiːn/ Pronunciation: /ˈflɔːrəsɪn/


[mass noun] Chemistry
An orange dye with a yellowish-green fluorescence, used as an indicator and tracer.
Example sentences
  • To this purpose we have considered four dyes, namely: indo - 1, rhodamine 6G, fluorescein, and pyrene.
  • Quinine bisulfate was used as the standard for the bisbenzimide dyes, for PIH and ethidium bromide the standard used was rhodamine 101 and fluorescein was used for the cyanine dyes.
  • Anole splenocytes were phagocytically active and produced copious amounts of nitric oxide following exposure to fluorescein labeled E. coli bioparticles.


Late 19th century: from fluorescence + -in1.

For editors and proofreaders

Line breaks: fluor|es¦cein

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