from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Decomposition or transformation of a compound caused by heat.
from The Century Dictionary.
- noun Chemical decomposition produced by exposure to a high temperature.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry, physics The
decompositionof a materialor compound dueto heatin the absence of oxygenor any other reagents
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun transformation of a substance produced by the action of heat
from Wiktionary, Creative Commons Attribution/Share-Alike License
From the Ancient Greek terms πῦρ (pyr, "fire") and λύσις (lysis, "loosing").
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