/ˌpetrəˈkemɪkəl/noun[C]NATURAL RESOURCES, PRODUCTION
Definition
›one of the chemical substances obtained from oil or natural gas: Less than a third of the raw materials used by the group are petrochemicals.
petrochemicals[plural]›products made from the chemical substances obtained from oil or natural gas: Our society is heavily dependent on oil-based goods such as plastics and petrochemicals.a petrochemicals company/business/plant
petrochemicals[U]›(alsothe petrochemical industry)the industry that produces petrochemicals: Half the workers in this state are employed in petrochemicals.