Glacier Posted on 13th November 20152nd September 2020 by ThePD (The Project Definition) A Glacier is a mass of ice that originates on land and moves very slowly downslope or outward due to its own weight. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Substance and tagged solid, water. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.