petrochemical
Word family nounpetrochemicalpetrochemistrypetrocurrencypetrodromepetrogenesispetroglyphpetroglyphypetrogrampetrographerpetrographypetrologistpetrologypetrophysicistpetrophysicsadjectivepetrogeneticpetroglyphicpetrographicpetrologicalpetrophysicaladverbpetrographicallypetrologically
pet·ro·chem·i·cal /ˌpetrəʊˈkemɪkəl $ -troʊ-/ noun [countableC]