the capital of Wales, situated in the southeast, in Cardiff county borough: formerly an important port; seat of the Welsh assembly (1999); university (1883). Pop: 346 100 (2011)
2.
a county borough in SE Wales, created in 1996 from part of South Glamorgan. Pop: 345 400 (2011 est). Area: 139 sq km (54 sq miles)
Welsh name: Caerdydd
Cardiff in American English
(ˈkɑrdɪf)
seaport in SE Wales, on the Bristol Channel: capital of Wales & county seat of South Glamorgan: county district pop. 279,000