- Either of two angles formed by two intersecting lines and lying on opposite sides of the point of intersection.对顶角：由两条相交线形成的两个角，它们分别处在相交点的两边
- City College of San Francisco
- City Colleges of Chicago-Chicago City-Wide College
- City Colleges of Chicago-Daley
- City Colleges of Chicago-Harold Washington College
- City Colleges of Chicago-Kennedy-King
- City Colleges of Chicago-Malcolm X
- City Colleges of Chicago-Olive-Harvey
- City Colleges of Chicago-Truman College
- City Colleges of Chicago-Wright College
- city council
- city desk
- city editor
- city father
- city hall
- city manager
- city room
- cityscape
- cityscapes
- city slicker
- city-state
- City University
- City University
- citywide
- city–state
- Ciudad Bolívar