- citronellals
- citronellas
- citronellol
- citronellols
- citrons
- citrulline
- citrullines
- citrus
- citrus canker
- Citrus College
- citruses
- Citrus Heights
- citrus red mite
- citrus red spider mite
- cittern
- citterns
- city
- city
- 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