fluorescein
or flu·o·res·ce·ine
[ floo-res-ee-in, flaw-, floh- ]
/ flʊˈrɛs i ɪn, flɔ-, floʊ- /
noun Chemistry.
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 called
resorcinolphthalein.
Words nearby fluorescein
Example sentences from the Web for fluorescein
By repeating this process two or three times, the fluorescein may be obtained in a very pure condition.
Fluorescein is readily nitrated, yielding a di- or tetra-nitro compound according to conditions.
If we fill a glass container with a fluorescein solution and look at it by reflected light it appears green.
Astounding Stories of Super-Science January 1930 |Victor Rousseau
British Dictionary definitions for fluorescein
fluorescein
fluoresceine
/ (ˌflʊəˈrɛsɪɪn) /
noun
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: C 20 H 12 O 5
Medical definitions for fluorescein
fluorescein
[ flu-rĕs′ē-ĭn, flô- ]
n.
An orange-red compound that exhibits intense fluorescence in alkaline solution and is used in ophthalmology to reveal corneal lesions.
Scientific definitions for fluorescein
fluorescein
[ flu-rĕs′ē-ĭn, flô- ]
An orange-red crystalline compound that exhibits intense fluorescence in alkaline solution. It is used in medicine for diagnostic purposes, in oceanography as a tracer, and as a textile dye. Chemical formula: C20H12O5.