English: Industry 4.0 
Welsh: Diwydiant 4.0
Subject: Datblygu economaidd
Welsh definition: Industry 4.0, Industrie 4.0 or the fourth industrial revolution is the current trend of automation and data exchange in manufacturing technologies. It includes cyber-physical systems, the Internet of things and cloud computing.
Notes: Gan ddilyn y diffiniad ar gyfer y term hwn, gallai’r aralleiriad “y pedwerydd chwyldro diwydiannol” fod yn addas mewn rhai cyd-destunau.