What does fluorescein mean?

Definitions for fluorescein
flʊˈrɛs i ɪn, flɔ-, floʊ-flu·o·res·cein

This dictionary definitions page includes all the possible meanings, example usage and translations of the word fluorescein.

Princeton's WordNet

  1. fluorescein, fluoresceine, fluorescent dye, resorcinolphthaleinnoun

    a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed)

Wiktionary

  1. fluoresceinnoun

    Any of a class of yellow xanthene dyes which are visible when highly diluted; used forensically to detect traces of blood, and in analytical chemistry as an indicator in silver nitrate titrations

Wikipedia

  1. Fluorescein

    Fluorescein is an organic compound and dye based on the xanthene tricyclic structural motif, formally belonging to triarylmethine dyes family. It is available as a dark orange/red powder slightly soluble in water and alcohol. It is widely used as a fluorescent tracer for many applications.The color of its aqueous solutions is green by reflection and orange by transmission (its spectral properties are dependent on pH of the solution), as can be noticed in bubble levels, for example, in which fluorescein is added as a colorant to the alcohol filling the tube in order to increase the visibility of the air bubble contained within (thus enhancing the precision of the instrument). More concentrated solutions of fluorescein can even appear red (because under these conditions nearly all incident emission is re-absorbed by the solution). It is on the World Health Organization's List of Essential Medicines.

ChatGPT

  1. fluorescein

    Fluorescein is a synthetic organic compound that appears as a dark orange-red powder. It is widely used as a fluorescent tracer for various biological and industrial applications, such as determining blood flow and detecting leaks due to its highly luminescent properties when exposed to ultraviolet or blue light. Additionally, in medicine, it's used as a dye for angiography procedures and helping diagnose certain eye issues. Its chemical formula is C20H12O5.

Webster Dictionary

  1. Fluoresceinnoun

    a yellowish red, crystalline substance, C20H12O5, produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin

Wikidata

  1. Fluorescein

    Fluorescein is a synthetic organic compound available as a dark orange/red powder soluble in water and alcohol. It is widely used as a fluorescent tracer for many applications. Fluorescein is a fluorophore commonly used in microscopy, in a type of dye laser as the gain medium, in forensics and serology to detect latent blood stains, and in dye tracing. Fluorescein has an absorption maximum at 494 nm and emission maximum of 521 nm. The major derivatives are fluorescein isothiocyanate and, in oligonucleotide synthesis, 6-FAM phosphoramidite. Fluorescein also has an isosbestic point at 460 nm. Fluorescein is also known as a color additive. The disodium salt form of fluorescein is known as uranine or D&C Yellow no. 8. The color of its aqueous solution varies from green to orange as a function of the way it is observed: by reflection or by transmission, as it can be noticed in bubble levels in which fluorescein is added as a colorant to the alcohol filling the tube to increase the visibility of the air bubble and the precision of the instrument. More concentrated solutions of fluorescein can even appear red.

U.S. National Library of Medicine

  1. Fluorescein

    A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium, such as the aqueous humor, and is used therapeutically as a diagnostic aid in corneal injuries and corneal trauma. It has been approved by FDA for use in externally applied drugs and cosmetics. (From Merck Index, 12th ed; American Medical Association Drug Evaluations; 1995, p2275)

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Numerology

  1. Chaldean Numerology

    The numerical value of fluorescein in Chaldean Numerology is: 3

  2. Pythagorean Numerology

    The numerical value of fluorescein in Pythagorean Numerology is: 1

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"fluorescein." Definitions.net. STANDS4 LLC, 2024. Web. 29 Mar. 2024. <https://www.definitions.net/definition/fluorescein>.

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