petrochemistry

[ pe-troh-kem-uh-stree ]
/ ˌpɛ troʊˈkɛm ə stri /

noun

the branch of chemistry dealing with petroleum or its products.
the chemistry of rocks.

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Origin of petrochemistry

1935–40; petro-2 or petro-1 + chemistry
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for petrochemistry

petrochemistry
/ (ˌpɛtrəʊˈkɛmɪstrɪ) /

noun

the chemistry of petroleum and its derivatives
the branch of chemistry concerned with the chemical composition of rocks
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012