WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / P / pyrolysis pyrolysis noun /paɪrɑlɪsɪs/ 4 syllables 9 letters Scrabble 17 WWF 17 Definitions noun transformation of a substance produced by the action of heat Look “pyrolysis” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →