Noun
DEMU (plural DEMUs)
(rail transport) Initialism of diesel-electric multiple unit.
DEMU is the country's first-ever commuter train service started its trial journey on Chittagong-Fouzdarhat route. Source: Internet
Diesel-powered units may be further classified by their transmission type: diesel-electric (DEMU), diesel-mechanical (DMMU) or diesel-hydraulic (DHMU). Source: Internet