furan

noun

1. a colorless, liquid, unsaturated, five-membered heterocyclic compound, C4H4O, obtained from furfural: used chiefly in organic synthesis.

noun

1. a colourless flammable toxic liquid heterocyclic compound, used in the manufacture of cotton textiles and in the synthesis of nylon. Formula: C 4 H 4 OAlso called: furfuran

n.

1. Any of a group of colorless, volatile, heterocyclic organic compounds containing a ring of four carbon atoms and one oxygen atom, used in the synthesis of organics.

1. Any of a group of colorless, volatile, organic compounds containing a ring of four carbon atoms and one oxygen atom. Furans are obtained from wood oils and used in the synthesis of many organic compounds.
2. The simplest such compound, consisting of a furan ring with two double bonds and attached to four hydrogen atoms. Chemical formula: C4H4O.