Chemical Symbol Posted on 5th November 201529th May 2022 by ThePD (The Project Definition) A Chemical Symbol refers to the Element Symbol. 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 chemistry, element. 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.