fluoresceine

F4L1U1O1R1E1S1C3E1I1N1E1

A form of fluorescein — Any of a class of yellow xanthene dyes which are visible when highly diluted; used forensically to detect traces of blood, and in analytical chemistry as an indicator in silver nitrate titrations

Similar
fluoresceinfluorescent dyeresorcinolphthalein
OriginEnglish fluoresce ← Middle English sparston ← Old English spærstān →
Scrabble 17
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Meanings

nounfluoresceine (plural fluoresceines)

plural fluoresceines

  1. alternativeAlternative spelling of fluorescein.

Synonyms & antonyms

nouna 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)

Similar
fluoresceinfluorescent dyeresorcinolphthalein
Broader
dyedyestuffabsorption indicator
Also see
fluoresceinresorcinolphthalein

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*bʰel-
  2. Proto-Indo-European*bʰlewH-
  3. Proto-Indo-European*bʰluH-yé-ti?
  4. Latinfluō
  5. Latinfluor
  6. Englishfluor
  7. Englishfluorite
  8. Middle Low Germanspar
  9. Old Englishspærstān
  10. Middle Englishsparston
  11. Englishsparstonebf.
  12. Englishspar
  13. Englishfluorspar
  14. Englishfluorescencebf.
  15. Englishfluoresce
  16. Englishfluoresceine

From fluoresce + -ine.

Full word history & related roots →
Cite this entry
APA

fluoresceine. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/fluoresceine

MLA

“fluoresceine.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fluoresceine. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “fluoresceine,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/fluoresceine.

Source: fluoresceine on Wiktionary, CC BY-SA 4.0.