fluorescein

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fluo·res·ce·in

 (flo͝o-rĕs′ē-ĭn, flô-, flō-)
n.
An orange-red compound, C20H12O5, that exhibits intense fluorescence in alkaline solution and is used in medicine for diagnostic purposes, in oceanography as a tracer, and as a textile dye.

fluorescein

(ˌflʊəˈrɛsɪɪn) or

fluoresceine

n
(Elements & Compounds) an orange-red crystalline compound that in aqueous solution exhibits a greenish-yellow fluorescence in reflected light and is reddish-orange in transmitted light: used as a marker in sea water and as an indicator. Formula: C20H12O5

fluo•res•ce•in

(flʊˈrɛs i ɪn, flɔ-, floʊ-)

n.
a red crystalline compound, C20H12O5, that in alkaline solutions produces an intense green fluorescence: used as a tracer and in dyes.
[1875–80]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fluorescein - 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)
solution - a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution; "he used a solution of peroxide and water"
absorption indicator - an indicator used in reactions that involve precipitation
dye, dyestuff - a usually soluble substance for staining or coloring e.g. fabrics or hair
bromeosin, eosin - a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures
Translations

fluorescein

n fluoresceina
References in periodicals archive ?
The most widely used diagnostic tests for tear film examination are tear break-up time (TBUT) test, corneal and conjunctival staining with fluorescein, rose bengal and lissamine green dye, Schirmer test, tear film osmolarity test and impression cytology.
Tear break-up time fluorescein test is widely accepted in dry eye diagnosis and is considered more reliable than Schirmer test as it can be repeated (13), and is minimally invasive.
Conjunctival and corneal epithelial erosions are stained with fluorescein dye (fluorescein invades the sites of disruption between cell junctions).

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