furan furaldehyde • furanoid · · · Info · Definitions · Synonyms · Characters · · furan · · Text Latin · · Script 5 · · Length Definitions · · · (noun) a colorless toxic flammable liquid used in the synthesis of nylon. Synonyms: furane, furfuran. · · Noun Definition 1 Synonyms · · · furane · · Synonym 1 furfuran · · Synonym 2 Characters · · a latin small letter a U+0061 f latin small letter f U+0066 n latin small letter n U+006E r latin small letter r U+0072 u latin small letter u U+0075