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pyrazole
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pyrene (1)
pyrene (2)
Pyrenean
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pyrochemical
py·ro·chem·i·cal [ prō kémmik'l ]


adjective 
Definition:
 
of chemical changes at high temperatures: relating to or resulting from chemical changes that take place at very high temperatures

py·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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