PYROGALLOL

pyrogallol, pyrogallic acid

(noun) a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer

Source: WordNet® 3.1


Etymology

Noun

pyrogallol (uncountable)

(organic compound) A poisonous trihydroxy phenol, 1,2,3-trihydroxybenzene, C6H3(OH)3, used is a photographic developer.

Synonyms

• pyrogallic acid

Source: Wiktionary


Pyr`o*gal"lol, n. Etym: [Pyrogallic + -ol.] (Chem.)

Definition: A phenol metameric with phloroglucin, obtained by the distillation of gallic acid as a poisonous white crystalline substance having acid properties, and hence called also pyrogallic acid. It is a strong reducer, and is used as a developer in photography and in the production of certain dyes.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

3 April 2025

WHOLE

(noun) an assemblage of parts that is regarded as a single entity; “how big is that part compared to the whole?”; “the team is a unit”


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