ustion means the act of burning, or the state of being burned. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From Latin ustio, from urere, ustum (“to burn”). Compare French ustion.
noun
- The act of burning, or the state of being burned.“he proves by the example of Vitriol , which becomes more milde and moderate by uſtion”