combustion

The release of energy as heat in a fire, when an energy-rich material such as wood combines with oxygen according to the general equation: CH2O + O2 = CO2 + H2O + energy.

combustion (firewood),
energy,
energy density,
firewood,
fossil fuels,
wood

This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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