English: urban development corporation
Welsh: corfforaeth datblygu trefol
Subject: Cynllunio
Welsh definition: Corff statudol a sefydlir o dan Ddeddf Llywodraeth Leol, Cynllunio a Thir 1980 at ddiben adfywio ardal datblygiad trefol.
Plural: corfforaethau datblygu trefol