Ca·thol·i·cism 
(kə-thŏlĭ-sĭz′əm)
(kə-thŏlĭ-sĭz′əm)n.
The faith, doctrine, system, and practice of a Catholic church, especially the Roman Catholic Church.
- population
- population explosion
- population genetics
- population inversion
- populism
- populist
- Populist Party
- populous
- populously
- populousness
- Populuxe
- pop-under
- pop-up
- pop wine
- porbeagle
- porcelain
- porcelain enamel
- porcelaneous
- porch
- porcine
- porcini mushroom
- porcupine
- porcupine fish
- Porcupine River
- pore