petrochemical

noun

1. Any chemical derived from petroleum.

   “Another is a Bloomberg project we're participating in that looks beyond petrochemicals.”

2. Any chemical derived from any of the fossil fuels: petroleum, natural gas, or coal.

   “As the prices of petroleum, natural gas, and coal fluctuate over the years, the petrochemical industry can to some extent switch feedstocks.”

adj

1. (not-comparable)Of or pertaining to the such compounds, or the industry that produces them.

   “In 2006, about 6 percent of the world's crude oil production was used in non-energy applications, primarily as a petrochemical feedstock.”