petrochemistry

 [pe-troh-kem-uh-stree]  

pet·ro·chem·is·try

   [pe-troh-kem-uh-stree]
noun
1.
the branch of chemistry dealing with petroleum or its products.
2.
the chemistry of rocks.
Origin:
1935–40; petro-2 or petro-1 + chemistry
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To petrochemistry

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Petrochemistry has a plethora of syllables.
So is pneumonoultramicroscopicsilicovolcanoconiosis. Does it mean:
an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.
a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.
LEARN MORE LONG WORDS WITH WORD DYNAMO...
Collins
World English Dictionary
petrochemistry (ˌpɛtrəʊˈkɛmɪstrɪ)
 
—n
1.  the chemistry of petroleum and its derivatives
2.  the branch of chemistry concerned with the chemical composition of rocks

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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