noun
Meaning 1
Fluorescein.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Standard Lemma guide
resorcinolphthalein
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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No pronunciation record was provided for this word.
noun
Meaning 2
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)
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: fluorescein, fluoresceine, fluorescent dye
Antonyms: none provided
Broader terms: absorption indicator, dye, dyestuff
Narrower terms: eosin, bromeosin
History
Etymology
Etymology tree Ancient Greek ῥητῑ́νη (rhētī́nē)bor. Latin rēsīnader. Old French résinebor. Middle English resyn English resin Proto-Indo-European *h2ew- Proto-Indo-European *-s Proto-Indo-European *h2ṓws Proto-Italic *auzis Latin auris Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Proto-Italic *-kelos Latin -cula Latin auricula Latin ōriculader. Italian oricelloder. Arabic [script needed] ('urjālla)influ. Old Catalan orxellader. Old French orchel French orseilleder. Dutch orseilleder. New Latin orcinader. French orcineder. English orcin Akkadian 𒎎𒋆𒁉𒍣𒁕 (guḫlum)bor. Aramaic כוחלא (kuḥlā)bor. Arabic كُحْل (kuḥl) Andalusian Arabic اَلْكُحُول (al-kuḥūl)bor. Medieval Latin alcoholder. Middle English alcofol English alcohol English -ol English orcinol English resorcinol English phthalein English resorcinolphthalein From resorcinol + phthalein.