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petrel
petri-
Petri dish
petrifaction
Petrified Forest National Park
petrify
Petrine
petro-
petrochemical
petrochemistry
petrodollar
petrogenesis
petroglyph
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petrol blue
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petrochemical
pet·ro·chem·i·cal [ pèttrō kémmik'l ]


noun  (plural pet·ro·chem·i·cals)
Definition:
 
derivative of petroleum or natural gas: a substance derived from petroleum or natural gas, e.g. gasoline or paraffin


adjective 
Definition:
 
relating to petrochemicals: relating to or derived from petrochemicals

pet·ro·chem·i·cal·ly adverb
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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