butanoic acid butanoic • butanol · · · Info · Definitions · Synonyms · Characters · · butanoic acid · · Text Common · · Latin · · Scripts 13 · · Length 6 · · Syllables Definitions · · · (noun) an unpleasant smelling fatty acid found especially in butter. Synonyms: butyric acid, butanoic acid. · · Noun Definition 1 Synonyms · · · butyric acid · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 d latin small letter d U+0064 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074 u latin small letter u U+0075