HQ (Headquarter) Posted on 15th November 201517th March 2022 by ThePD (The Project Definition) HQ (Headquarter) is a main office of an organisation such as the army, the police, or a business company. 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 General and tagged word. 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.