CARDIFF, a city, municipal, county and parliamentary borough, seaport and market-town, and the county town of Glamorganshire, South Wales, situated on the Taff, 5 m.
The Taff is spanned by two bridges, one a four-arched bridge rebuilt in 1858-1859 leading to Llandaff, and the other a cantilever with a central swinging span of 190 ft.
Under powers secured in 1884, the town obtains its chief water supply from a gathering ground near the sources of the Taff on the old red sandstone beyond the northern out-crop of the mineral basin and on the southern slopes of the Brecknock Beacons.
The commercial greatness of Cardiff is due to the vast coal and iron deposits of the country drained by the Taff and Rhymney, between whose outlets the town is situated.
The Welsh form of the name, Caerdydd (pronounced Caerdeeth, with the accent on the second syllable) suggests that the name means "the fort of (Aulus ?) Didius," rather than Caer Daf ("the fortress on the Taff"), which is nowhere found (except in Leland), though Caer Dyv once existed as a variant.