# pyrolysis

> English word · Noun · IPA /paɪˈɹɒlɪsɪs/ · frequency rank #65,428

## Definitions
1. The decomposition of a material or compound due to heat, in the absence of oxygen or other reagents.

## Etymology
From pyro- + -lysis.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/pyrolysis