cathedral
ca‧the‧dral /kəˈθiːdrəl/
noun [countable]
the main church of a particular area under the control of a bishop:
St Paul’s Cathedral
cathedral city British English (=one with a cathedral)
ca‧the‧dral /kəˈθiːdrəl/
noun [countable] Date: 1500-1600
Origin: cathedral church 'cathedral' (13-21 centuries); cathedral from Old French, from Late Latin cathedralis, from Latin cathedra 'chair, bishop's chair'; ⇨ chair1
Origin: cathedral church 'cathedral' (13-21 centuries); cathedral from Old French, from Late Latin cathedralis, from Latin cathedra 'chair, bishop's chair'; ⇨ chair1

the main church of a particular area under the control of a bishop:
cathedral city British English (=one with a cathedral)