Glassing
From Halopedia, the Halo wiki
The common term used to refer to the action of the Covenant Plasma Assualts on a planet's surface; which results in the ground being turned to glass. The remains of the planet are added to the Step of Silence in High Charity.
File:Covenantconquestlh3.jpg
A fan made picture depicting a Covenant fleet after a planet is glassed.
