Microcephaly Posted on 7th December 201516th May 2021 by ThePD (The Project Definition) Microcephaly is a neonatal malformation defined as a head size much smaller compared with other babies of the same age and sex. 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 HSE and tagged health, hse. 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.