- A colorless, flammable, toxic, liquid aromatic hydrocarbon, C<sub>6</sub>H<sub>6</sub>, derived from petroleum and used in or to manufacture a wide variety of chemical products, including DDT, detergents, insecticides, and motor fuels.
- A hydrocarbon (C<sub>6</sub>H<sub>6</sub>) formed whenever organic bodies are subjected to destructive distillation at a high temperature, and obtained commercially from coal-tar.
- Same as <internalXref urlencoded="benzin">benzin</internalXref> or <em>benzine.</em>
- A volatile, very inflammable liquid, C6H6, contained in the naphtha produced by the destructive distillation of coal, from which it is separated by fractional distillation. The name is sometimes applied also to the impure commercial product or <ex>benzole</ex>, and also, but rarely, to a similar mixed product of petroleum.
- a closed chain or ring, consisting of six carbon atoms, each with one hydrogen atom attached, regarded as the type from which the aromatic compounds are derived. This ring formula is provisionally accepted as representing the probable constitution of the benzene molecule, C6H6, and as the type on which its derivatives are formed.
- An <xref>aromatic</xref> <xref>hydrocarbon</xref> of <xref>formula</xref> C6H6 whose structure consists of a <xref>ring</xref> of <xref>alternate</xref> <xref>single</xref> and <xref>double</xref> <xref>bonds</xref>.
- Sometimes used in place of the <xref>phenyl</xref> group
- a colorless liquid hydrocarbon; highly inflammable; carcinogenic; the simplest of the aromatic compounds