Is FLUORESCEIN a word?Yes. FLUORESCEIN is a 11-letter noun. 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) Check the official dictionary for your particular word game before playing it.
Meaning and definition
1noun
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)
Synonymsfluoresceinefluorescent dyeresorcinolphthalein
Source: Open English WordNet 2025 (CC BY 4.0) ↗