1. having undergone pyrolysis; decomposed by heat without oxygen
Usage: technical/scientific term; commonly used in materials science and chemistry

1. past tense and past participle of pyrolyse; subjected to pyrolysis (decomposition by heat in the absence of oxygen)
Usage: chiefly British spelling; American English typically uses 'pyrolyzed'; technical/scientific term

Examples

• The pyrolysed wood was converted into biochar for soil amendment.
• Researchers pyrolysed the plastic waste to recover valuable hydrocarbons.
• The pyrolysed material showed improved electrical conductivity.
• Biomass was pyrolysed at high temperatures to produce syngas.
• The pyrolysed carbon samples were analyzed using spectroscopy.
• Industrial processes often use pyrolysed organic compounds as feedstock.