fluorescein

fluorescein
An orange-red crystalline powder that yields a bright green fluorescence in solution, and is reduced to fluorescin; a nontoxic, water-soluble indicator used diagnostically to trace water flow. SYN: resorcinol phthalic anhydride, resorcinolphthalein.
- f. sodium a dye used for diagnosis of certain ocular diseases, differentiation or delineation of organ parts in surgery, and determination of circulation time. SYN: resorcinolphthalein sodium, uranin.

* * *

flu·o·res·ce·in -'es-ē-ən n a yellow or red crystalline dye C20H12O5 with a bright yellow-green fluorescence in alkaline solution that is used as the sodium salt as an aid in diagnosis (as of lesions and foreign bodies in the cornea or of brain tumors)

* * *

flu·o·res·ce·in (fl-resґēn) [USP] the simplest of the fluorane dyes and the parent compound of eosin; used as a diagnostic indicator in assessing corneal trauma and fitting contact lenses.

Fluorescein staining of an area of ulceration in progressive circumferential peripheral corneal ulceration.


Medical dictionary. 2011.

Look at other dictionaries:

  • fluorescein — fluo res ce*in, fluoresceine fluo res ce*ine, fluorescein flu o*res ce*[ i]n, n. (Chem.) A yellowish red, crystalline substance, {C20H12O5}, produced by heating together phthalic anhydride and resorcin; so called, from the very brilliant… …   The Collaborative International Dictionary of English

  • fluorescein — fluo res ce*in, fluoresceine fluo res ce*ine, fluorescein flu o*res ce*[ i]n, n. (Chem.) A yellowish red, crystalline substance, {C20H12O5}, produced by heating together phthalic anhydride and resorcin; so called, from the very brilliant… …   The Collaborative International Dictionary of English

  • fluorescein — fluorescèīn m <G fluoresceína> DEFINICIJA kem. C20H12O5 narančasti kristalni prah, u vodenoj otopini fluorescira zeleno ETIMOLOGIJA v. fluorescencija …   Hrvatski jezični portal

  • fluorescein —  Fluorescein  Флуоресцеин   Флуоресцентный краситель, флуоресцирующий в зеленой области при возбуждении синим или ультрафиолетовым светом. Разбавленный раствор этого вещества применяется для определения имеющихся дефектов на поверхности роговицы… …   Толковый англо-русский словарь по нанотехнологии. - М.

  • fluorescein — [flo͞o΄əres′ē in] n. [< FLUORESCE + IN1: from its bright fluorescence in solution] a yellowish red, crystalline compound, C20H12O5, made synthetically from resorcinol and phthalic anhydride: a dilute alkaline solution appears green by… …   English World dictionary

  • Fluorescein — Chembox new ImageFile = Fluoresceine.svg ImageSize = ImageFile2 = Fluorescein sample.jpg IUPACName = OtherNames = Fluorescein, resorcinolphthalein, C.I. 45350, solvent yellow 94, D C yellow no. 7, angiofluor, Japan yellow 201, soap yellow,… …   Wikipedia

  • Fluorescein — Strukturformel Allgemeines Name Fluorescein Andere Namen …   Deutsch Wikipedia

  • Fluorescein — Flu|o|res|ce|in [↑ Fluoreszenz u. ↑ in (3)], das; s; veraltetes Syn.: Resorcinphthalein: rote krist. oder gelbe amorphe Verb., Smp. 314 °C, deren wässrig alkalische oder alkoholische Lsg. grün fluoreszieren. Von dem Xanthenfarbstoff F. leiten… …   Universal-Lexikon

  • fluorescein — Fluorophore commonly used in microscopy. Fluorescein di acetate can be used as a vital stain, or can be conjugated to proteins (particularly antibodies) using isothiocyanate. Excitation is at 365nm, and the emitted light is green yellow (450… …   Dictionary of molecular biology

  • fluorescein — /floo res ee in, flaw , floh /, n. Chem. an orange red, crystalline, water insoluble solid, C20H12O5, that in alkaline solutions produces an orange color and an intense green fluorescence: used to trace subterranean waters and in dyes. Also,… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”