Reduction Posted on 18th December 201510th May 2021 by ThePD (The Project Definition) A Reduction is an action of making smaller in size, amount or important. 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 risk, safety, 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.