petrochemistry [pe-troh-kem-uh-stree] WORD ORIGIN 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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 British Dictionary definitions for petrochemistry petrochemistry 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

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