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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 ?
There was a significant difference in surgeon satisfaction with the use of mannitol as a bladder distention medium during intraoperative cystoscopy compared with normal saline infusion, oral phenazopyridine, or intravenous sodium fluorescein in an unblinded randomized trial of 130 women who underwent gynecologic surgery at a single institution.
WASHINGTON -- Sodium fluorescein is proving to be an excellent agent for helping to verify ureteral efflux during intraoperative cystoscopy, Dr.
Here sodium fluorescein solution is added to the epithelial side of the chamber and the permeability of the fluorescent compound is quantified by measuring absorbance at 490nm.
Sodium fluorescein (Color Index 45170) and rhodamine (Color Index 45350) fluorescent tracers and sodium chloride (NaCl) saline tracer were used to obtain the dilution and dispersion data in order to monitor and quantify the transit times of the tracer cloud through sampling sections.
Two percent (2%) sodium fluorescein solution was gently instilled into the inferior fornix of the subject.
10] If there is edema in the macula or the central fovea, where it threatens central vision, one must first identify the leaking microvascular lesions by injecting sodium fluorescein angiography intravenously and photographing retinal vessels by fundus camera.
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.
Techniques currently utilised to evaluate mastectomy flap viability intra-operatively range from crude, subjective methods such as detection of skin discoloration, evaluation of 'bleeding edges' and assessment of capillary refill, to more sophisticated methods: the intravenous sodium fluorescein test (Wood's lamp method), near-infrared spectroscopy and transcutaneous electrical nerve stimulation (TENS).
In addition, we evaluated the functional permeability of the BBB by measuring permeability of sodium fluorescein across the brain microvessels.

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