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 (flo͝o-rĕs′ē-ĭn, flô-, flō-)
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.


(ˌflʊəˈrɛsɪɪn) or


(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


(flʊˈrɛs i ɪn, flɔ-, floʊ-)

a red crystalline compound, C20H12O5, that in alkaline solutions produces an intense green fluorescence: used as a tracer and in dyes.
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


n fluoresceina
References in periodicals archive ?
Multiple fluorescein releases also exhibited banding of the dye (not shown), which may have been the result of internal waves or an instability mechanism, the details of which are under investigation.
The RF-6000 offers high sensitivity and signal-to-noise ratio (SNR) of (SNR >1,000 RMS and >350 peak-peak), according to the company, which allows for very low limits of quantitation and achieving quantitation of fluorescein to concentrations of 1 x 10-13 mol/L.
The second edition of Age-Related Macular Degeneration presents a collection of essays by over sixty international medical contributors on the subjects of intravenous fluorescein angiography, indocyanine green angiography, and optical coherence tomography, among many other issues related to macular degeneration.
Two drops of test material (saturated fluorescein 0.
Researchers used a non-toxic dye, fluorescein, to determine epithelial damage of northern pike and largemouth bass.
Examples of tags meeting these criteria include fluorescein paired to anti-fluorescein antibodies, and biotin paired to streptavidin.
The co-primary conclusions of the study are a change in corneal fluorescein staining score and an improvement in pain and discomfort.
The bright yellow color was due to fluorescein sodium given intravenously 2 h before urine collection for retinal angiography.
Patients were assessed at baseline, four, 12 and 24-week intervals using a variety of disease parameters including Ocular Surface Disease Index (OSDI) symptom severity questionnaire, topographical indices (SAI and SRI), inflammatory biomarkers (HLA-DR and CD11c), Schirmer tear flow measurement, tear breakup time (TBUT), and conjunctival fluorescein and lissamine green staining.
It was possible to adjust the rheologic properties of the formulations and to increase the sodium fluorescein permeation through porcine skin by mixing them with carrageenan gels.
VPA, fluorescein, ethyl paraben, glycyrrhizin, sodium dodecyl sulfate (SDS), dimethyl sulfoxide (DMSO), calcium chloride, triton X-100, 2-morpholinoethanesulfonic acid monohydrate (MES monohydrate) and 3-(4',5'-dimethylthiazol-2'-y1)-2,5-diphenyltetrazolium bromide (MTT) were purchased from Sigma (St.