'IX' also found in these entries (note: many are not synonyms or translations):
Benedict IX
- Bhumibol Adulyadej
- Blanche of Castile
- Boniface IX
- Catherine de Médicis
- Catherine de' Medici
- Charles IX
- Christian IX
- Christmas factor
- Chénier
- Clement IX
- El Mansura
- El Mansûra
- Euler's formula
- Frederick IX
- Frederik IX
- Gregory IX
- Innocent IX
- John IX
- Leo IX
- Louis IX
- Phumiphon Aduldet
- Pius IX
- Rama IX
- Roman numerals
- Stephen IX
- Title IX
- Vatican Council
- annuit coeptis
- appendectomy
- appendix
- decimal point
- factor IX
- ixia
- ixodid
- nine
- olallieberry
- radectomy
- syllabus
- zone system