Phrase guide
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noun
A complex nitroso derivative of barbituric acid, with formula HON=C(CONH)2CO, that forms characteristic yellow, blue, and violet salts.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From violet and barbituric.
